Condensed-matter physics articles within Nature Communications

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  • Article
    | Open Access

    The techniques we typically employ to study spin-waves in magnetic materials, such as Brillouin Light Scattering, are two-dimensional. Spin waves, however, are manifestly three-dimensional. Here, Girardi et al. succeed in such three-dimensional imaging of spin waves in a synthetic antiferromagnet using Time-Resolved Soft X-ray Laminography.

    • Davide Girardi
    • , Simone Finizio
    •  & Edoardo Albisetti

  • Article
    | Open Access

    Here the authors demonstrate a broadband nonlinear optical diode effect and its electric control in the magnetic Weyl semimetal CeAlSi. Their findings advance ongoing research to identify novel optical phenomena in topological materials.

    • Christian Tzschaschel
    • , Jian-Xiang Qiu
    •  & Su-Yang Xu

  • Article
    | Open Access

    Guo et al. report enhanced emission and photoconductivity in 2D Ruddlesden-Popper perovskites by synergistically tuning the intra and interlayer structure via pressure. A structure descriptor considering both intra- and interlayer is then introduced for screening perovskite with desired properties.

    • Songhao Guo
    • , Willa Mihalyi-Koch
    •  & Xujie Lü

  • Article
    | Open Access

    The authors demonstrate that the band structure of graphene nanoribbons is modulated by cove edges, brightening the luminescence 4-fold via emission from otherwise dark twilight states. High spectral resolution of the optical response reveals strong vibron-electron coupling

    • Bernd K. Sturdza
    • , Fanmiao Kong
    •  & Robin J. Nicholas

  • Article
    | Open Access

    Optical control is an alternative pathway to boost nonlinear transport in noncentrosymmetric systems. Here, the authors observe a light-induced giant enhancement of nonreciprocal transport coefficient as high as 105 A−1 T−1 at KTaO3-based Rashba interfaces.

    • Xu Zhang
    • , Tongshuai Zhu
    •  & Xuefeng Wang

  • Article
    | Open Access

    Several recent experimental studies have found disconnected Fermi surface arcs emerging below the Neel temperature in several rare-earth mono-pnictides. While these electronic states have been attributed to a non-collinear antiferromagnetic order, experimental evidence of this has been lacking. Here Huang et al demonstrate the emergence of non-collinear antiferromagnetic order using spin-polarized scanning tunnelling microscopy.

    • Zengle Huang
    • , Hemian Yi
    •  & Weida Wu

  • Article
    | Open Access

    Previous understanding of the coupling between ferroelectric structure and magnetic texture in BiFeO3 has relied on mesoscale measurements. Here, the authors image coupling directly, showing a complex spin cycloid controlled with electric field.

    • Peter Meisenheimer
    • , Guy Moore
    •  & Ramamoorthy Ramesh

  • Article
    | Open Access

    Kekulé vortices in hexagonal lattices can host fractionalized charges at zero magnetic field, but have remained out of experimental reach. Here, the authors report a Kekulé vortex in the local density states of graphene around a chemisorbed hydrogen adatom.

    • Yifei Guan
    • , Clement Dutreix
    •  & Vincent T. Renard

  • Article
    | Open Access

    Exchange bias occurs in a variety of magnetic materials and heterostructures. The quintessential example occurs in antiferromagnetic/ferromagnetic heterostructures and has been employed extensively in magnetic memory devices. Here, via a specific field training protocol, the authors demonstrate an exchange bias of up to 400mT in odd layered MnBi2Te4.

    • Su Kong Chong
    • , Yang Cheng
    •  & Kang L. Wang

  • Article
    | Open Access

    Earlier research has shown that controlling activity in the active matter can lead to either a phase change or a laminar-turbulent transition in active fluids. Authors demonstrate that it is possible to control both the phase transitions between solid, liquid, and gas states and the laminar-to-turbulent transitions in fluid phases by adjusting the activity of a phoretic medium.

    • Qianhong Yang
    • , Maoqiang Jiang
    •  & Lailai Zhu

  • Article
    | Open Access

    Magnetic fields can enhance electrocatalysis, yet its effect on mass transport has been overlooked. Here, the authors track the motion induced on the electrolyte ions, demonstrating that mass transport effects can double the catalyst activity with low reactant availability, as in oxygen reduction.

    • Priscila Vensaus
    • , Yunchang Liang
    •  & Magalí Lingenfelder

  • Article
    | Open Access

    Ultrafast demagnetization refers to the process where an intense optical drive can destroy the magnetic order in a magnetic material on a femto-second timescale. Here, Wu et al resolve a three-stage ultrafast demagnetization process in a monolayer of Fe3GeTe2.

    • Na Wu
    • , Shengjie Zhang
    •  & Sheng Meng

  • Article
    | Open Access

    The microscopic structure of quantum defects in 2D materials is crucial to understand their optical properties and spin-photon interface. Here, the authors report the direct imaging of charge state-dependent symmetry breaking of sulfur vacancies and rhenium dopants in 2D MoS2, showing evidence of a Jahn-Teller effect.

    • Feifei Xiang
    • , Lysander Huberich
    •  & Bruno Schuler

  • Article
    | Open Access

    Moiré patterns have been experimentally observed in heterostructures comprised of topological insulator films. Here, the authors propose that topological insulator-based moiré heterostructures could be a host of isolated topologically non-trivial moiré minibands for the study of the interplay between topology and correlation.

    • Kaijie Yang
    • , Zian Xu
    •  & Chao-Xing Liu

  • Article
    | Open Access

    Li et al. report large circular dichroism in 2D chiral perovskite single crystals, arises from the inorganic sublattice, instead of chiral ligands, driven by electron-hole exchange interactions. This is evidenced by both reflective circular dichroism spectroscopy and ab initio theory.

    • Shunran Li
    • , Xian Xu
    •  & Peijun Guo

  • Article
    | Open Access

    Rhombohedral multilayer graphene has emerged as an exciting solid-state platform for studying correlated electron physics. Here, the authors demonstrate field-tunable layer-polarized ferromagnetism and isolated surface flat bands engineered with a moiré potential.

    • Wenqiang Zhou
    • , Jing Ding
    •  & Shuigang Xu

  • Article
    | Open Access

    The interplay between stacking configurations and atom intercalation in van der Waals materials has been rarely characterized at the microscopic level. Here, the authors report an electron microscopy study of stacking-selective self-intercalation in Nb1+xSe2 films, showing potential for nanoscale engineering of electronic properties in van der Waals materials and devices.

    • Hongguang Wang
    • , Jiawei Zhang
    •  & Hidenori Takagi

  • Article
    | Open Access

    Electron–phonon interactions are a crucial aspect of high-quality graphene devices. Here, the authors show that graphene resistivity grows strongly in the direction of the carrier flow when the drift velocity exceeds the speed of sound due to the electrical amplification of acoustic terahertz phonons.

    • Aaron H. Barajas-Aguilar
    • , Jasen Zion
    •  & Javier D. Sanchez-Yamagishi

  • Article
    | Open Access

    Recently superconductivity with Tc of about 80 K was discovered in a bilayer nickelate La3Ni2O7 under high pressure. Here the authors report a density functional theory and random phase approximation study of structural and electronic properties as a function of pressure and discuss the pairing mechanism.

    • Yang Zhang
    • , Ling-Fang Lin
    •  & Elbio Dagotto

  • Article
    | Open Access

    Magnetic type-II Weyl semimetals host a variety of intriguing physical phenomena due to the combination of magnetic ordering and the electronic properties of the Weyl nodes. Herein, the authors explore the ultrafast spin dynamics of the magnetic Weyl semimetal, Co3Sn2S2, observing a transient enhanced magnetization as a result of laser excitation.

    • Xianyang Lu
    • , Zhiyong Lin
    •  & Yongbing Xu

  • Article
    | Open Access

    The interplay between electron-phonon and spin-orbit interactions has led to the concept of a spin-orbit polaron. Here the authors show that such a regime is realized in a spin-orbit-coupled Mott insulator, leading to a new polaron quasiparticle, and study its effect on the Mott metal-insulator transition.

    • Lorenzo Celiberti
    • , Dario Fiore Mosca
    •  & Cesare Franchini

  • Article
    | Open Access

    Fermi arcs show unpredictable diffraction features resulting from their long-range scattering order in aperiodic systems. Here, authors continuously twist a bi-block Weyl meta-crystal and experimentally observe the twisted Fermi arc reconstruction.

    • Hanyu Wang
    • , Wei Xu
    •  & Biao Yang

  • Article
    | Open Access

    The authors present Nernst measurements on a 2D film of amorphous MoxGe1−x, which shows a magnetic-field-induced superconductor-metal-insulator transition. The intermediate metal phase is known as the “anomalous metal” (AM) state. The authors conclude that the AM state originates from broadening of the superconductor-insulator transition.

    • Koichiro Ienaga
    • , Yutaka Tamoto
    •  & Satoshi Okuma

  • Article
    | Open Access

    Some materials host multiple charge density wave states, however, their dynamics and the nature of phase transitions are often unclear. Here, using temperature and orientation resolved ultrafast spectroscopy, the authors reveal charge density waves of different dimensionality in CuTe and elucidate their mechanism.

    • Nguyen Nhat Quyen
    • , Wen-Yen Tzeng
    •  & Chih-Wei Luo

  • Article
    | Open Access

    The strong ionic bond in salt is broken by electrostatic interactions with water, but direct observation at the level of a single ion is challenging. Here, the authors have visualized the preferential dissolution of an anion by manipulating a single water molecule.

    • Huijun Han
    • , Yunjae Park
    •  & Hyung-Joon Shin

  • Article
    | Open Access

    The authors propose that screw or edge dislocations can trap Majorana zero modes in the absence of an external magnetic field. They predict that the Majoranas will appear as second-order topological modes on the four corners of an embedded 2D subsystem defined by the cutting plane of the dislocation.

    • Lun-Hui Hu
    •  & Rui-Xing Zhang

  • Article
    | Open Access

    Recently, signatures of quantum spin liquid have been reported in monolayer transition metal dichalcogenides. Here the authors report evidence of such state in 1T-NbSe2 via the measurements of the Kondo effect in a 1T-1H heterostructure, further supported by measurements for magnetic molecules on 1T-NbSe2.

    • Quanzhen Zhang
    • , Wen-Yu He
    •  & Yeliang Wang

  • Article
    | Open Access

    The authors theoretically propose a simple microscopic mechanism for light-induced superconductivity based on a boson coupled to an electronic interband transition. The electron-electron attraction needed for the superconductivity can be resonantly amplified when the boson’s frequency is close to the energy difference between the two electronic bands. The model can be engineered using a 2D heterostructure.

    • Christian J. Eckhardt
    • , Sambuddha Chattopadhyay
    •  & Marios H. Michael

  • Article
    | Open Access

    Gapped quantum antiferromagnets can undergo field or pressure induced phase transitions to the magnetically ordered state, which have distinct critical exponents. While there are many examples of field induced transitions, thus far the pressure induced case has proven difficult to realize. Herein, the authors demonstrate such a pressure driven phase transition in the quantum antiferromagnet, DTN.

    • Kirill Yu. Povarov
    • , David E. Graf
    •  & Sergei A. Zvyagin

  • Article
    | Open Access

    Van Hove singularities (VHS) are believed to exist in one and two dimensions, but rarely found in three dimensions (3D). Here the authors report the discovery of 3D VHS in a topological magnet EuCd2As2 by magneto-infrared spectroscopy.

    • Wenbin Wu
    • , Zeping Shi
    •  & Xiang Yuan

  • Article
    | Open Access

    Here the authors experimentally demonstrate the anomalous and Chern topological phases in a hyperbolic non-reciprocal scattering network, establishing unidirectional channels to induce new and exciting wave transport properties in curved spaces.

    • Qiaolu Chen
    • , Zhe Zhang
    •  & Romain Fleury

  • Article
    | Open Access

    Strongly interacting interlayer excitons and the interplay between excitons and electronic states have recently been studied in moire superlattices. Here the authors study moire WS2/WSe2 heterobilayer with tuneable electron and exciton populations and find signatures of an excitonic Mott insulating state.

    • Beini Gao
    • , Daniel G. Suárez-Forero
    •  & Mohammad Hafezi

  • Article
    | Open Access

    Compact sources in the frequency range of 6-12 THz are difficult to obtain due to optical phonon absorption in conventional III-V semiconductors. Here, the authors demonstrate third harmonic generation at 9.63 THz by optically pumping monolayer graphene coupled to a circular split ring resonator by using a semiconductor laser.

    • Alessandra Di Gaspare
    • , Chao Song
    •  & Miriam S. Vitiello

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