Letters

  • Letter |

    The authors predict that Berry flux can be spontaneously generated in a metal by plasmonic oscillations in response to illumination by light. They show that this topological ‘Berryogenesis’ can work in graphene.

    • Mark S. Rudner
    •  & Justin C. W. Song
  • Letter |

    Machine learning can help to identify quantum phase transitions. Here a trained neural network is applied to single-shot density images from a quantum gas experiment, realizing the Haldane model and the Bose–Hubbard model.

    • Benno S. Rem
    • , Niklas Käming
    • , Matthias Tarnowski
    • , Luca Asteria
    • , Nick Fläschner
    • , Christoph Becker
    • , Klaus Sengstock
    •  & Christof Weitenberg
  • Letter |

    Experiments report the generation and manipulation of eight photons on a silicon chip. Integrating linear and nonlinear photonic circuitry, three different boson sampling approaches are implemented and used to compute molecular vibronic spectra.

    • Stefano Paesani
    • , Yunhong Ding
    • , Raffaele Santagati
    • , Levon Chakhmakhchyan
    • , Caterina Vigliar
    • , Karsten Rottwitt
    • , Leif K. Oxenløwe
    • , Jianwei Wang
    • , Mark G. Thompson
    •  & Anthony Laing
  • Letter |

    The authors demonstrate that individual atoms on a surface can be detected and distinguished from each other with subångström resolution using the electron spin resonance.

    • Philip Willke
    • , Kai Yang
    • , Yujeong Bae
    • , Andreas J. Heinrich
    •  & Christopher P. Lutz
  • Letter |

    Quantum gas microscopes provide high-resolution real-space snapshots of quantum many-body systems. Now machine-learning techniques are used in choosing theoretical descriptions according to the consistency of their predictions with these snapshots.

    • Annabelle Bohrdt
    • , Christie S. Chiu
    • , Geoffrey Ji
    • , Muqing Xu
    • , Daniel Greif
    • , Markus Greiner
    • , Eugene Demler
    • , Fabian Grusdt
    •  & Michael Knap
  • Letter |

    A prediction of the existence of trapped acoustic-gravity waves in stratified fluids provides a platform for probing topological phenomena in the lab—with possible implications for astrophysical and geophysical flows.

    • Manolis Perrot
    • , Pierre Delplace
    •  & Antoine Venaille
  • Letter |

    It is shown that composite fermions in the fractional quantum Hall regime form paired states in double-layer graphene. Pairing between layers gives a phase similar to an exciton condensate and pairing within a layer may lead to non-abelian states.

    • J. I. A. Li
    • , Q. Shi
    • , Y. Zeng
    • , K. Watanabe
    • , T. Taniguchi
    • , J. Hone
    •  & C. R. Dean
  • Letter |

    Transport data reveal interlayer composite fermion fractional quantum Hall states in double-layer graphene. The authors also show that these can pair up to form an interlayer composite fermion exciton condensate.

    • Xiaomeng Liu
    • , Zeyu Hao
    • , Kenji Watanabe
    • , Takashi Taniguchi
    • , Bertrand I. Halperin
    •  & Philip Kim
  • Letter |

    A Josephson junction array is used to show the phase mode associated with superconductivity surviving deep in the insulating regime at high frequency. This generates a device with an effective fine structure constant larger than unity.

    • R. Kuzmin
    • , R. Mencia
    • , N. Grabon
    • , N. Mehta
    • , Y.-H. Lin
    •  & V. E. Manucharyan
  • Letter |

    This study presents a proposal for an all-optical method for manipulating chiral superconductors. Light pulses can switch the handedness of the chirality, potentially enabling controlled local writing of domain walls and associated Majorana modes.

    • M. Claassen
    • , D. M. Kennes
    • , M. Zingl
    • , M. A. Sentef
    •  & A. Rubio
  • Letter |

    A collective excitation behaving as a single emergent entity, known as a quasiparticle, often becomes unstable when encountering a continuum of many-body excited states. However, under certain conditions, the result can be totally different.

    • Ruben Verresen
    • , Roderich Moessner
    •  & Frank Pollmann
  • Letter |

    The Kondo effect—the screening of a magnetic impurity’s local moment by the electron Fermi sea in a metal—has been observed in a charge-insulating quantum spin liquid material, where the spinon excitations take the role of electrons.

    • M. Gomilšek
    • , R. Žitko
    • , M. Klanjšek
    • , M. Pregelj
    • , C. Baines
    • , Y. Li
    • , Q. M. Zhang
    •  & A. Zorko
  • Letter |

    According to the Unruh effect, for an accelerating observer the vacuum is filled with thermal radiation. Experiments now simulate this effect, recreating the statistics of Unruh radiation in the matter-wave field of a Bose–Einstein condensate.

    • Jiazhong Hu
    • , Lei Feng
    • , Zhendong Zhang
    •  & Cheng Chin
  • Letter |

    The decay asymmetry and helicity phase of polarized baryon–antibaryon pairs are measured at the BESIII experiment, testing charge–parity symmetry and revealing a discrepancy of the Λ →  decay asymmetry with respect to the current world average.

    • M. Ablikim
    • , M. N. Achasov
    • , S. Ahmed
    • , M. Albrecht
    • , M. Alekseev
    • , A. Amoroso
    • , F. F. An
    • , Q. An
    • , Y. Bai
    • , O. Bakina
    • , R. Baldini Ferroli
    • , Y. Ban
    • , K. Begzsuren
    • , D. W. Bennett
    • , J. V. Bennett
    • , N. Berger
    • , M. Bertani
    • , D. Bettoni
    • , F. Bianchi
    • , E. Boger
    • , I. Boyko
    • , R. A. Briere
    • , H. Cai
    • , X. Cai
    • , A. Calcaterra
    • , G. F. Cao
    • , S. A. Cetin
    • , J. Chai
    • , J. F. Chang
    • , W. L. Chang
    • , G. Chelkov
    • , G. Chen
    • , H. S. Chen
    • , J. C. Chen
    • , M. L. Chen
    • , P. L. Chen
    • , S. J. Chen
    • , X. R. Chen
    • , Y. B. Chen
    • , W. Cheng
    • , X. K. Chu
    • , G. Cibinetto
    • , F. Cossio
    • , H. L. Dai
    • , J. P. Dai
    • , A. Dbeyssi
    • , D. Dedovich
    • , Z. Y. Deng
    • , A. Denig
    • , I. Denysenko
    • , M. Destefanis
    • , F. De Mori
    • , Y. Ding
    • , C. Dong
    • , J. Dong
    • , L. Y. Dong
    • , M. Y. Dong
    • , Z. L. Dou
    • , S. X. Du
    • , P. F. Duan
    • , J. Z. Fan
    • , J. Fang
    • , S. S. Fang
    • , Y. Fang
    • , R. Farinelli
    • , L. Fava
    • , S. Fegan
    • , F. Feldbauer
    • , G. Felici
    • , C. Q. Feng
    • , E. Fioravanti
    • , M. Fritsch
    • , C. D. Fu
    • , Q. Gao
    • , X. L. Gao
    • , Y. Gao
    • , Y. G. Gao
    • , Z. Gao
    • , B. Garillon
    • , I. Garzia
    • , A. Gilman
    • , K. Goetzen
    • , L. Gong
    • , W. X. Gong
    • , W. Gradl
    • , M. Greco
    • , L. M. Gu
    • , M. H. Gu
    • , Y. T. Gu
    • , A. Q. Guo
    • , L. B. Guo
    • , R. P. Guo
    • , Y. P. Guo
    • , A. Guskov
    • , Z. Haddadi
    • , S. Han
    • , X. Q. Hao
    • , F. A. Harris
    • , K. L. He
    • , F. H. Heinsius
    • , T. Held
    • , Y. K. Heng
    • , Z. L. Hou
    • , H. M. Hu
    • , J. F. Hu
    • , T. Hu
    • , Y. Hu
    • , G. S. Huang
    • , J. S. Huang
    • , X. T. Huang
    • , X. Z. Huang
    • , Z. L. Huang
    • , T. Hussain
    • , W. Ikegami Andersson
    • , M. Irshad
    • , Q. Ji
    • , Q. P. Ji
    • , X. B. Ji
    • , X. L. Ji
    • , H. L. Jiang
    • , X. S. Jiang
    • , X. Y. Jiang
    • , J. B. Jiao
    • , Z. Jiao
    • , D. P. Jin
    • , S. Jin
    • , Y. Jin
    • , T. Johansson
    • , A. Julin
    • , N. Kalantar-Nayestanaki
    • , X. S. Kang
    • , M. Kavatsyuk
    • , B. C. Ke
    • , I. K. Keshk
    • , T. Khan
    • , A. Khoukaz
    • , P. Kiese
    • , R. Kiuchi
    • , R. Kliemt
    • , L. Koch
    • , O. B. Kolcu
    • , B. Kopf
    • , M. Kornicer
    • , M. Kuemmel
    • , M. Kuessner
    • , A. Kupsc
    • , M. Kurth
    • , W. Kühn
    • , J. S. Lange
    • , P. Larin
    • , L. Lavezzi
    • , S. Leiber
    • , H. Leithoff
    • , C. Li
    • , Cheng Li
    • , D. M. Li
    • , F. Li
    • , F. Y. Li
    • , G. Li
    • , H. B. Li
    • , H. J. Li
    • , J. C. Li
    • , J. W. Li
    • , K. J. Li
    • , Kang Li
    • , Ke Li
    • , Lei Li
    • , P. L. Li
    • , P. R. Li
    • , Q. Y. Li
    • , T. Li
    • , W. D. Li
    • , W. G. Li
    • , X. L. Li
    • , X. N. Li
    • , X. Q. Li
    • , Z. B. Li
    • , H. Liang
    • , Y. F. Liang
    • , Y. T. Liang
    • , G. R. Liao
    • , L. Z. Liao
    • , J. Libby
    • , C. X. Lin
    • , D. X. Lin
    • , B. Liu
    • , B. J. Liu
    • , C. X. Liu
    • , D. Liu
    • , D. Y. Liu
    • , F. H. Liu
    • , Fang Liu
    • , Feng Liu
    • , H. B. Liu
    • , H. L Liu
    • , H. M. Liu
    • , Huanhuan Liu
    • , Huihui Liu
    • , J. Liu
    • , J. B. Liu
    • , J. Y. Liu
    • , K. Y. Liu
    • , Ke Liu
    • , L. D. Liu
    • , Q. Liu
    • , S. B. Liu
    • , X. Liu
    • , Y. B. Liu
    • , Z. A. Liu
    • , Zhiqing Liu
    • , Y. F. Long
    • , X. C. Lou
    • , H. J. Lu
    • , J. G. Lu
    • , Y. Lu
    • , Y. P. Lu
    • , C. L. Luo
    • , M. X. Luo
    • , P. W. Luo
    • , T. Luo
    • , X. L. Luo
    • , S. Lusso
    • , X. R. Lyu
    • , F. C. Ma
    • , H. L. Ma
    • , L. L. Ma
    • , M. M. Ma
    • , Q. M. Ma
    • , X. N. Ma
    • , X. Y. Ma
    • , X. X. Ma
    • , Y. M. Ma
    • , F. E. Maas
    • , M. Maggiora
    • , S. Maldaner
    • , Q. A. Malik
    • , A. Mangoni
    • , Y. J. Mao
    • , Z. P. Mao
    • , S. Marcello
    • , Z. X. Meng
    • , J. G. Messchendorp
    • , G. Mezzadri
    • , J. Min
    • , T. J. Min
    • , R. E. Mitchell
    • , X. H. Mo
    • , Y. J. Mo
    • , C. Morales Morales
    • , N. Yu. Muchnoi
    • , H. Muramatsu
    • , A. Mustafa
    • , S. Nakhoul
    • , Y. Nefedov
    • , F. Nerling
    • , I. B. Nikolaev
    • , Z. Ning
    • , S. Nisar
    • , S. L. Niu
    • , X. Y. Niu
    • , S. L. Olsen
    • , Q. Ouyang
    • , S. Pacetti
    • , Y. Pan
    • , M. Papenbrock
    • , P. Patteri
    • , M. Pelizaeus
    • , J. Pellegrino
    • , H. P. Peng
    • , Z. Y. Peng
    • , K. Peters
    • , J. Pettersson
    • , J. L. Ping
    • , R. G. Ping
    • , A. Pitka
    • , R. Poling
    • , V. Prasad
    • , H. R. Qi
    • , M. Qi
    • , T. Y. Qi
    • , S. Qian
    • , C. F. Qiao
    • , N. Qin
    • , X. S. Qin
    • , Z. H. Qin
    • , J. F. Qiu
    • , S. Q. Qu
    • , K. H. Rashid
    • , C. F. Redmer
    • , M. Richter
    • , M. Ripka
    • , A. Rivetti
    • , M. Rolo
    • , G. Rong
    • , Ch. Rosner
    • , M. Rump
    • , A. Sarantsev
    • , M. Savrié
    • , K. Schoenning
    • , W. Shan
    • , X. Y. Shan
    • , M. Shao
    • , C. P. Shen
    • , P. X. Shen
    • , X. Y. Shen
    • , H. Y. Sheng
    • , X. Shi
    • , J. J. Song
    • , W. M. Song
    • , X. Y. Song
    • , S. Sosio
    • , C. Sowa
    • , S. Spataro
    • , F. F. Sui
    • , G. X. Sun
    • , J. F. Sun
    • , L. Sun
    • , S. S. Sun
    • , X. H. Sun
    • , Y. J. Sun
    • , Y. K Sun
    • , Y. Z. Sun
    • , Z. J. Sun
    • , Z. T. Sun
    • , Y. T Tan
    • , C. J. Tang
    • , G. Y. Tang
    • , X. Tang
    • , M. Tiemens
    • , B. Tsednee
    • , I. Uman
    • , B. Wang
    • , B. L. Wang
    • , C. W. Wang
    • , D. Wang
    • , D. Y. Wang
    • , Dan Wang
    • , H. H. Wang
    • , K. Wang
    • , L. L. Wang
    • , L. S. Wang
    • , M. Wang
    • , Meng Wang
    • , P. Wang
    • , P. L. Wang
    • , W. P. Wang
    • , X. F. Wang
    • , Y. Wang
    • , Y. F. Wang
    • , Z. Wang
    • , Z. G. Wang
    • , Z. Y. Wang
    • , Zongyuan Wang
    • , T. Weber
    • , D. H. Wei
    • , P. Weidenkaff
    • , S. P. Wen
    • , U. Wiedner
    • , M. Wolke
    • , L. H. Wu
    • , L. J. Wu
    • , Z. Wu
    • , L. Xia
    • , X. Xia
    • , Y. Xia
    • , D. Xiao
    • , Y. J. Xiao
    • , Z. J. Xiao
    • , Y. G. Xie
    • , Y. H. Xie
    • , X. A. Xiong
    • , Q. L. Xiu
    • , G. F. Xu
    • , J. J. Xu
    • , L. Xu
    • , Q. J. Xu
    • , X. P. Xu
    • , F. Yan
    • , L. Yan
    • , W. B. Yan
    • , W. C. Yan
    • , Y. H. Yan
    • , H. J. Yang
    • , H. X. Yang
    • , L. Yang
    • , R. X. Yang
    • , S. L. Yang
    • , Y. H. Yang
    • , Y. X. Yang
    • , Yifan Yang
    • , Z. Q. Yang
    • , M. Ye
    • , M. H. Ye
    • , J. H. Yin
    • , Z. Y. You
    • , B. X. Yu
    • , C. X. Yu
    • , J. S. Yu
    • , C. Z. Yuan
    • , Y. Yuan
    • , A. Yuncu
    • , A. A. Zafar
    • , Y. Zeng
    • , B. X. Zhang
    • , B. Y. Zhang
    • , C. C. Zhang
    • , D. H. Zhang
    • , H. H. Zhang
    • , H. Y. Zhang
    • , J. Zhang
    • , J. L. Zhang
    • , J. Q. Zhang
    • , J. W. Zhang
    • , J. Y. Zhang
    • , J. Z. Zhang
    • , K. Zhang
    • , L. Zhang
    • , S. F. Zhang
    • , T. J. Zhang
    • , X. Y. Zhang
    • , Y. Zhang
    • , Y. H. Zhang
    • , Y. T. Zhang
    • , Yang Zhang
    • , Yao Zhang
    • , Yu Zhang
    • , Z. H. Zhang
    • , Z. P. Zhang
    • , Z. Y. Zhang
    • , G. Zhao
    • , J. W. Zhao
    • , J. Y. Zhao
    • , J. Z. Zhao
    • , Lei Zhao
    • , Ling Zhao
    • , M. G. Zhao
    • , Q. Zhao
    • , S. J. Zhao
    • , T. C. Zhao
    • , Y. B. Zhao
    • , Z. G. Zhao
    • , A. Zhemchugov
    • , B. Zheng
    • , J. P. Zheng
    • , W. J. Zheng
    • , Y. H. Zheng
    • , B. Zhong
    • , L. Zhou
    • , Q. Zhou
    • , X. Zhou
    • , X. K. Zhou
    • , X. R. Zhou
    • , X. Y. Zhou
    • , Xiaoyu Zhou
    • , Xu Zhou
    • , A. N. Zhu
    • , J. Zhu
    • , J. Zhu
    • , K. Zhu
    • , K. J. Zhu
    • , S. Zhu
    • , S. H. Zhu
    • , X. L. Zhu
    • , Y. C. Zhu
    • , Y. S. Zhu
    • , Z. A. Zhu
    • , J. Zhuang
    • , B. S. Zou
    •  & J. H. Zou
  • Letter |

    AlPt is shown to be a chiral topological material with four-fold and six-fold degeneracies in the band structure. Fermi arc edge states span the whole Brillouin zone and their dispersion enables identification of the handedness of the chiral material.

    • Niels B. M. Schröter
    • , Ding Pei
    • , Maia G. Vergniory
    • , Yan Sun
    • , Kaustuv Manna
    • , Fernando de Juan
    • , Jonas. A. Krieger
    • , Vicky Süss
    • , Marcus Schmidt
    • , Pavel Dudin
    • , Barry Bradlyn
    • , Timur K. Kim
    • , Thorsten Schmitt
    • , Cephise Cacho
    • , Claudia Felser
    • , Vladimir N. Strocov
    •  & Yulin Chen
  • Letter |

    A deterministic violation of the Bell inequality is reported between two superconducting circuits, providing a necessary test for establishing strong enough quantum entanglement to achieve secure quantum communications.

    • Y. P. Zhong
    • , H.-S. Chang
    • , K. J. Satzinger
    • , M.-H. Chou
    • , A. Bienfait
    • , C. R. Conner
    • , É. Dumur
    • , J. Grebel
    • , G. A. Peairs
    • , R. G. Povey
    • , D. I. Schuster
    •  & A. N. Cleland
  • Letter |

    Single-particle resolved measurements in an ultracold-atom experiment reveal an intuitive picture of quantum correlations, providing strong constraints on the full density matrix of the two-particle system in the presence of interactions.

    • Andrea Bergschneider
    • , Vincent M. Klinkhamer
    • , Jan Hendrik Becher
    • , Ralf Klemt
    • , Lukas Palm
    • , Gerhard Zürn
    • , Selim Jochim
    •  & Philipp M. Preiss
  • Letter |

    In acoustic metamaterials, unconventional chiral quasiparticles exhibit multifold band degeneracy points, each carrying non-zero topological charges, giving rise to the topologically protected negative surface refraction.

    • Yihao Yang
    • , Hong-xiang Sun
    • , Jian-ping Xia
    • , Haoran Xue
    • , Zhen Gao
    • , Yong Ge
    • , Ding Jia
    • , Shou-qi Yuan
    • , Yidong Chong
    •  & Baile Zhang
  • Letter |

    Structures containing multiple skyrmions inside a larger skyrmion—called skyrmion bags—are experimentally created in liquid crystals and theoretically predicted in magnetic materials. These may have applications in information storage technology.

    • David Foster
    • , Charles Kind
    • , Paul J. Ackerman
    • , Jung-Shen B. Tai
    • , Mark R. Dennis
    •  & Ivan I. Smalyukh
  • Letter |

    A continuous version of the Maxwell demon is a machine that repeatedly monitors a system, but extracts work only on state change. Arbitrarily large quantities of work can thus be extracted, as demonstrated by DNA hairpin pulling experiments.

    • M. Ribezzi-Crivellari
    •  & F. Ritort
  • Letter |

    The difference between the β-decay rate predicted for free neutrons and that measured in real nuclei is explained by first-principles calculations to arise from strong correlations and the weak-force coupling between nucleons.

    • P. Gysbers
    • , G. Hagen
    • , J. D. Holt
    • , G. R. Jansen
    • , T. D. Morris
    • , P. Navrátil
    • , T. Papenbrock
    • , S. Quaglioni
    • , A. Schwenk
    • , S. R. Stroberg
    •  & K. A. Wendt
  • Letter |

    The measured change in the fundamental frequency of a superconducting resonator coupled to a tunnel junction reveals a broadband constant Lamb shift, which is typically inaccessible in atomic systems.

    • Matti Silveri
    • , Shumpei Masuda
    • , Vasilii Sevriuk
    • , Kuan Y. Tan
    • , Máté Jenei
    • , Eric Hyyppä
    • , Fabian Hassler
    • , Matti Partanen
    • , Jan Goetz
    • , Russell E. Lake
    • , Leif Grönberg
    •  & Mikko Möttönen
  • Letter |

    Bacteria and other helical microswimmers are known to swim faster in non-Newtonian fluids. Coarse-grained simulations suggest the increase may be due to a polymer depletion effect near the body and flagellum, inducing a slip velocity at the surface.

    • Andreas Zöttl
    •  & Julia M. Yeomans
  • Letter |

    A graphene-like two-dimensional sonic crystal, under uniaxial deformation, experiences a giant uniform pseudomagnetic field. This leads to the quantization of the cyclotron orbits—a kind of acoustic Landau level—that is observed here.

    • Xinhua Wen
    • , Chunyin Qiu
    • , Yajuan Qi
    • , Liping Ye
    • , Manzhu Ke
    • , Fan Zhang
    •  & Zhengyou Liu
  • Letter |

    Inelastic neutron scattering is used to probe the spin dynamics of molecular nanomagnets, but extensive supporting computations make the technique challenging. Proof-of-principle experiments now show that quantum computers may solve these computations efficiently.

    • A. Chiesa
    • , F. Tacchino
    • , M. Grossi
    • , P. Santini
    • , I. Tavernelli
    • , D. Gerace
    •  & S. Carretta
  • Letter |

    Triggered by the fluctuations of the electromagnetic vacuum, parametric down-conversion offers a new primary radiation standard based on quantum nonlinear optics.

    • Samuel Lemieux
    • , Enno Giese
    • , Robert Fickler
    • , Maria V. Chekhova
    •  & Robert W. Boyd
  • Letter |

    Collagen networks go from soft to rigid when strained, but in tissue they exist in a soft matrix. An enhanced stiffness and delayed strain-stiffening is now revealed in the composite, which may explain the remarkable sensitivity of living tissue.

    • Federica Burla
    • , Justin Tauber
    • , Simone Dussi
    • , Jasper van der Gucht
    •  & Gijsje H. Koenderink
  • Letter |

    The quantum Hall effect is thought to exist only in two-dimensional materials. Here, transport measurements show that thin graphite slabs have a 2.5-dimensional version, with a parity effect for samples with odd and even number of layers.

    • Jun Yin
    • , Sergey Slizovskiy
    • , Yang Cao
    • , Sheng Hu
    • , Yaping Yang
    • , Inna Lobanova
    • , Benjamin A. Piot
    • , Seok-Kyun Son
    • , Servet Ozdemir
    • , Takashi Taniguchi
    • , Kenji Watanabe
    • , Kostya S. Novoselov
    • , Francisco Guinea
    • , A. K. Geim
    • , Vladimir Fal’ko
    •  & Artem Mishchenko
  • Letter |

    By subjecting a Chern insulator to a circular drive, its geometrical and topological properties would be accessible from the spectroscopic response. This prediction is now confirmed in a Floquet topological system realized by ultracold fermionic atoms.

    • Luca Asteria
    • , Duc Thanh Tran
    • , Tomoki Ozawa
    • , Matthias Tarnowski
    • , Benno S. Rem
    • , Nick Fläschner
    • , Klaus Sengstock
    • , Nathan Goldman
    •  & Christof Weitenberg
  • Letter |

    The authors show that a magnetic material with kagome lattice planes hosts a flat band near the Fermi level. Electrons in this band exhibit ‘negative magnetism’ due to the Berry curvature.

    • Jia-Xin Yin
    • , Songtian S. Zhang
    • , Guoqing Chang
    • , Qi Wang
    • , Stepan S. Tsirkin
    • , Zurab Guguchia
    • , Biao Lian
    • , Huibin Zhou
    • , Kun Jiang
    • , Ilya Belopolski
    • , Nana Shumiya
    • , Daniel Multer
    • , Maksim Litskevich
    • , Tyler A. Cochran
    • , Hsin Lin
    • , Ziqiang Wang
    • , Titus Neupert
    • , Shuang Jia
    • , Hechang Lei
    •  & M. Zahid Hasan
  • Letter |

    Spectral study on 36,37,38Ca isotopes and calculations based on density functional theory reveal the interplay between charge radii and nucleonic pairing correlations.

    • A. J. Miller
    • , K. Minamisono
    • , A. Klose
    • , D. Garand
    • , C. Kujawa
    • , J. D. Lantis
    • , Y. Liu
    • , B. Maaß
    • , P. F. Mantica
    • , W. Nazarewicz
    • , W. Nörtershäuser
    • , S. V. Pineda
    • , P.-G. Reinhard
    • , D. M. Rossi
    • , F. Sommer
    • , C. Sumithrarachchi
    • , A. Teigelhöfer
    •  & J. Watkins
  • Letter |

    Axial fields couple to the states of different chiralities with opposite signs. In an acoustic Weyl system, the implementation of such fields induces chiral Landau levels, which is now observed experimentally.

    • Valerio Peri
    • , Marc Serra-Garcia
    • , Roni Ilan
    •  & Sebastian D. Huber
  • Letter |

    Experiments on microtubule-based nematics, together with active gel theory, suggest that the length scale associated with active turbulence is selected at its onset—balancing activity with the stabilizing effects of nematic elasticity and geometry.

    • Berta Martínez-Prat
    • , Jordi Ignés-Mullol
    • , Jaume Casademunt
    •  & Francesc Sagués
  • Letter |

    Quantum stochastic resonance, in which the quantum fluctuation represents the noise needed to amplify an otherwise weak signal, is reported in the charging and discharging of a single-electron quantum dot.

    • Timo Wagner
    • , Peter Talkner
    • , Johannes C. Bayer
    • , Eddy P. Rugeramigabo
    • , Peter Hänggi
    •  & Rolf J. Haug
  • Letter |

    The magnetic moment of the neutron-rich exotic 75Cu nucleus is measured using rare isotope beams with a high spin alignment, clarifying how the evolution of the nuclear shell and the shape deformations are connected.

    • Y. Ichikawa
    • , H. Nishibata
    • , Y. Tsunoda
    • , A. Takamine
    • , K. Imamura
    • , T. Fujita
    • , T. Sato
    • , S. Momiyama
    • , Y. Shimizu
    • , D. S. Ahn
    • , K. Asahi
    • , H. Baba
    • , D. L. Balabanski
    • , F. Boulay
    • , J. M. Daugas
    • , T. Egami
    • , N. Fukuda
    • , C. Funayama
    • , T. Furukawa
    • , G. Georgiev
    • , A. Gladkov
    • , N. Inabe
    • , Y. Ishibashi
    • , T. Kawaguchi
    • , T. Kawamura
    • , Y. Kobayashi
    • , S. Kojima
    • , A. Kusoglu
    • , I. Mukul
    • , M. Niikura
    • , T. Nishizaka
    • , A. Odahara
    • , Y. Ohtomo
    • , T. Otsuka
    • , D. Ralet
    • , G. S. Simpson
    • , T. Sumikama
    • , H. Suzuki
    • , H. Takeda
    • , L. C. Tao
    • , Y. Togano
    • , D. Tominaga
    • , H. Ueno
    • , H. Yamazaki
    •  & X. F. Yang
  • Letter |

    Efficient spin injection across ferromagnet/semiconductor interfaces is a major goal for future spintronic approaches. Ultrafast spectroscopy now reveals strong spin currents to be inducible in monolayer MoS2 by ultralow-intensity laser pulses.

    • Liang Cheng
    • , Xinbo Wang
    • , Weifeng Yang
    • , Jianwei Chai
    • , Ming Yang
    • , Mengji Chen
    • , Yang Wu
    • , Xiaoxuan Chen
    • , Dongzhi Chi
    • , Kuan Eng Johnson Goh
    • , Jian-Xin Zhu
    • , Handong Sun
    • , Shijie Wang
    • , Justin C. W. Song
    • , Marco Battiato
    • , Hyunsoo Yang
    •  & Elbert E. M. Chia
  • Letter |

    A new form of charge ordering is observed in a cuprate superconductor. At low doping, a fully rotationally symmetric ordering appears before becoming locked to the Cu–O bond directions at high doping. The link between charge correlations and fermiology give a perspective on the phase diagram.

    • Mingu Kang
    • , Jonathan Pelliciari
    • , Alex Frano
    • , Nicholas Breznay
    • , Enrico Schierle
    • , Eugen Weschke
    • , Ronny Sutarto
    • , Feizhou He
    • , Padraic Shafer
    • , Elke Arenholz
    • , Mo Chen
    • , Keto Zhang
    • , Alejandro Ruiz
    • , Zeyu Hao
    • , Sylvia Lewin
    • , James Analytis
    • , Yoshiharu Krockenberger
    • , Hideki Yamamoto
    • , Tanmoy Das
    •  & Riccardo Comin
  • Letter |

    Observations reveal that electrons in Earth’s outer radiation belt possess a spectrum that partially rises with increasing energy, contrary to common beliefs. Plasma hiss waves scattered off electrons are found to be the origin of this phenomenon.

    • H. Zhao
    • , B. Ni
    • , X. Li
    • , D. N. Baker
    • , W. R. Johnston
    • , W. Zhang
    • , Z. Xiang
    • , X. Gu
    • , A. N. Jaynes
    • , S. G. Kanekal
    • , J. B. Blake
    • , S. G. Claudepierre
    • , M. A. Temerin
    • , H. O. Funsten
    • , G. D. Reeves
    •  & A. J. Boyd
  • Letter |

    Report of the likely observation of a Mott insulator in trilayer graphene with a moiré potential. The Mott state can be tuned between different filling fractions via gating, which will enable the careful study of this paradigmatic many-body state.

    • Guorui Chen
    • , Lili Jiang
    • , Shuang Wu
    • , Bosai Lyu
    • , Hongyuan Li
    • , Bheema Lingam Chittari
    • , Kenji Watanabe
    • , Takashi Taniguchi
    • , Zhiwen Shi
    • , Jeil Jung
    • , Yuanbo Zhang
    •  & Feng Wang
  • Letter |

    There has latterly been a renewed interest in collective excitations in condensed matter systems. Now, spectroscopic evidence for the so-called Leggett mode is revealed in the superconductor MgB2.

    • Flavio Giorgianni
    • , Tommaso Cea
    • , Carlo Vicario
    • , Christoph P. Hauri
    • , Wenura K. Withanage
    • , Xiaoxing Xi
    •  & Lara Benfatto
  • Letter |

    Quantum interference between electronic pathways is generally difficult to observe in solid-state systems. Such interference is, however, now characterized in the second-harmonic generation from transition metal dichalcogenides, even at room temperature.

    • Kai-Qiang Lin
    • , Sebastian Bange
    •  & John M. Lupton