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  • Article | | open

    Electrons have been used to map the structural properties of materials since the discovery of the particle-wave duality, while recent advances in ultrafast electron sources enabled time-resolved electron scattering techniques to probe atomic-scale structural dynamics with femtosecond temporal accuracy. The authors demonstrate ultrafast nano-diffraction with relativistic beams as well as scanning transmission electron microscopy enabling them to probe the micro-texture in complex heterogeneous materials.

    • F. Ji
    • , D. B. Durham
    • , A. M. Minor
    • , P. Musumeci
    • , J. G. Navarro
    •  & D. Filippetto
  • Review Article | | open

    Quantum communication and computing is now in a data-intensive domain where a classical network describing a quantum system seems no longer sufficient to yield a generalization of complex networks methods to the quantum domain. The authors review recent progress into this paradigm shift that drives the creation of a network theory based fundamentally on quantum effects.

    • Jacob Biamonte
    • , Mauro Faccin
    •  & Manlio De Domenico
  • Article | | open

    Nanoparticle carriers are increasingly used for targeted drug delivery and other medical applications and ideally one would want several functionalities associated with one single nanocarrier. The authors report a method to improve collection and minimize aggregation of plasma polymerized nanoparticles by modifying the substrate design on which they are collected from a typical 2D geometry into a series of well-like structures which increase sample yield as well as inhibiting their fusion with the substrate itself.

    • Miguel Santos
    • , Bryce Reeves
    • , Praveesuda Michael
    • , Richard Tan
    • , Steven G. Wise
    •  & Marcela M. M. Bilek
  • Article | | open

    The aim of quantum communications is to transmit quantum information at high rate over long distances, something that can only be achieved by quantum repeaters and quantum networks. Here the author presents the ultimate end-to-end capacities of a quantum network, also showing the advantages of multipath network routing versus single repeater chains.

    • Stefano Pirandola
  • Article | | open

    Antiferromagnets are expected to be a key part of next generation electronic devices however their magnetic interactions prove difficult to access. Here, the authors demonstrate that the surface sensitive spin-Hall magnetoresistance, along with a simple analytical model, can successfully probe the internal anisotropies of the model antiferromagnet hematite (α-Fe2O3).

    • R. Lebrun
    • , A. Ross
    • , O. Gomonay
    • , S. A. Bender
    • , L. Baldrati
    • , F. Kronast
    • , A. Qaiumzadeh
    • , J. Sinova
    • , A. Brataas
    • , R. A. Duine
    •  & M. Kläui
  • Article | | open

    The experimental realisation of a Kondo lattice and the interplay with Mott–Hubbard charge localisation is one of the many challenges in condensed matter physics. The authors deposit f-elements onto a metallic substrate to elucidate the conditions required to obtain a Kondo lattice on a superlattice and investigate the interplay with the Mott physics.

    • Hovan Lee
    • , Evgeny Plekhanov
    • , David Blackbourn
    • , Swagata Acharya
    •  & Cedric Weber
  • Article | | open

    Systems composed of neutral atoms and photons provide an ideal platform for the emerging field of quantum non-linear optics, which in turn is of interest for quantum technologies and the study of many-body physics. The authors theoretically propose a hybrid light-matter quasi-particle akin of polaritons composed of an optical soliton trapping a fermionic atom that carries a nontrivial topological quantum number.

    • Kieran A. Fraser
    •  & Francesco Piazza
  • Article | | open

    Hot carrier generation via plasmon decay is an important mechanism in quantum plasmonics and is typically understood using semiclassical theory however a fully quantum method is required to properly analyse such systems. To this end, the authors develop a quantum-mechanical approach to describe the decay of quantized plasmons into hot electrons and holes.

    • Lara Román Castellanos
    • , Ortwin Hess
    •  & Johannes Lischner
  • Article | | open

    Dynamic light scattering is a method used to examine the dynamics and the size distribution of submicrometer particles and operates in reciprocal space. The authors apply the fundamentals of this technique to magnetic resonance imaging in order to examine particle motion below the spatial resolution in short measurement time.

    • Volker Herold
    • , Thomas Kampf
    •  & Peter Michael Jakob
  • Article | | open

    The effect of localized disruption or failure in interdependent networks with internal community structure remains an open question. Adopting the generating function approach, the authors are able to uncover rich phase transition behaviours and the associated risks for such system, and by studying real networks under random failures within a community, they find that weakening the community strength could rapidly drive the system to a precarious state.

    • Jiachen Sun
    • , Rui Zhang
    • , Ling Feng
    • , Christopher Monterola
    • , Xiao Ma
    • , Céline Rozenblat
    • , H. Eugene Stanley
    • , Boris Podobnik
    •  & Yanqing Hu
  • Article | | open

    High-entropy alloys establish a new conceptual framework for alloy design and can exhibit outstanding properties attractive for technological applications. The authors investigate the pressure induced magnetovolume effect in the high-entropy alloy CoCrFeAl and find its origin in two progressive, experimentally tunable magnetic transitions.

    • Lei Liu
    • , Shuo Huang
    • , Levente Vitos
    • , Minjie Dong
    • , Elena Bykova
    • , Dongzhou Zhang
    • , Bjarne S. G. Almqvist
    • , Sergey Ivanov
    • , Jan-Erik Rubensson
    • , Bela Varga
    • , Lajos K. Varga
    •  & Peter Lazor
  • Article | | open

    Hexagonal boron nitride has been theoretically predicted to have high values for its thermal conductivity which would make it useful for thermal management of devices but these values have not been experimentally achieved. The authors manipulate the isotope concentration of B to increase the thermal conductivity and reach these predicted values.

    • Chao Yuan
    • , Jiahan Li
    • , Lucas Lindsay
    • , David Cherns
    • , James W. Pomeroy
    • , Song Liu
    • , James H. Edgar
    •  & Martin Kuball
  • Article | | open

    The energy efficient control of magnetisation for memory applications is one of the most important challenges in the field of spintronics. The authors investigate theoretically the possibility of the switching a one-dimensional antiferromagnet using an external electric field.

    • T. H. Kim
    • , S. H. Han
    •  & B. K. Cho
  • Article | | open

    Protons can be accelerated up to energies of tens of MeV by having an ultra-intense laser pulse interacting with a solid target, in a mechanism known as Target Normal Sheath Acceleration. The authors show that strong enhancement of proton acceleration and number can be achieved by splitting the laser pulse into two parts of equal energy and opposite incidence angles.

    • J. Ferri
    • , E. Siminos
    •  & T. Fülöp
  • Article | | open

    In a society relying on large amount of digital information and big data, information security is of paramount importance. The authors present a concept of physically unclonable function (PUF) based on the randomness of biological systems and offering the potential for a fully unclonable, reproducible and reconfigurable PUF.

    • Akshay Wali
    • , Akhil Dodda
    • , Yang Wu
    • , Andrew Pannone
    • , Likhith Kumar Reddy Usthili
    • , Sahin Kaya Ozdemir
    • , Ibrahim Tarik Ozbolat
    •  & Saptarshi Das
  • Article | | open

    Semiconductor microcavities coupled to a quantum well can produce three regimes of coherent light generation depending on the nature of the light–matter and electron–hole interactions. The authors design a Se/Te based microcavity containing a single quantum well which enables them to achieve all three lasing regimes in the one device.

    • Krzysztof Sawicki
    • , Jean-Guy Rousset
    • , Rafał Rudniewski
    • , Wojciech Pacuski
    • , Maciej Ściesiek
    • , Tomasz Kazimierczuk
    • , Kamil Sobczak
    • , Jolanta Borysiuk
    • , Michał Nawrocki
    •  & Jan Suffczyński
  • Comment | | open

    The concept of non-Hermitian parity-time reversal symmetry in optics has given rise to a vast amount of research aimed at exploring some of the exotic features displayed by photonics systems. The authors present a brief account of the state-of-the-art on non-Hermitian photonics and provide their perspective on the topic.

    • Ramy El-Ganainy
    • , Mercedeh Khajavikhan
    • , Demetrios N. Christodoulides
    •  & Sahin K. Ozdemir
  • Article | | open

    Quantum phase transitions and emergent electronic ordered states are intriguing phenomena in condensed matter physics. Using a ruthenate material system, the authors employ scanning tunnelling microscopy and spectroscopy to visualise the transition from a metal to a Mott insulator via doping and find evidence for emergent charge order.

    • Justin Leshen
    • , Mariam Kavai
    • , Ioannis Giannakis
    • , Yoshio Kaneko
    • , Yoshi Tokura
    • , Shantanu Mukherjee
    • , Wei-Cheng Lee
    •  & Pegor Aynajian
  • Article | | open

    Electron paramagnetic resonance (EPR) spectroscopy is an important technology for many branches of science where unpaired electrons need to be unambiguously detected. The authors propose an EPR spectrometer that uses a single artificial atom as a sensitive detector of spin magnetization enabling them to significantly improve the sensitivity when small sample volumes are present.

    • Hiraku Toida
    • , Yuichiro Matsuzaki
    • , Kosuke Kakuyanagi
    • , Xiaobo Zhu
    • , William J. Munro
    • , Hiroshi Yamaguchi
    •  & Shiro Saito
  • Article | | open

    Magnetic resonance imaging is widely used for the diagnosis of many ailments and efforts to continuously improve image resolution and decrease acquisition time are strongly sought after. The authors demonstrate that the application of specially designed metamaterials could help improve the signal-to-noise ratio, which in turn can be translated to boost the performance of MRI.

    • Guangwu Duan
    • , Xiaoguang Zhao
    • , Stephan William Anderson
    •  & Xin Zhang
  • Article | | open

    Soliton explosions are a nonlinear instability phenomenon in which a dissipative soliton experiences a sudden structural collapse, but can return back to its original shape despite the strong energy dissipation. The authors report the experimental observation of soliton explosions in a fibre laser, finding that the instability is triggered by the collision of double dissipative solitons.

    • Junsong Peng
    •  & Heping Zeng
  • Article | | open

    Ferroelectric negative capacitance could be used to overcome the Boltzmann limit for next-generation energy-efficient transistors. This study demonstrates the performance capability of nanothick ZrO2 observing negative capacity and ferroelectric inductance and characterizes the role of multidomains in the observed behaviors.

    • Po-Hsien Cheng
    • , Yu-Tung Yin
    • , I-Na Tsai
    • , Chen-Hsuan Lu
    • , Lain-Jong Li
    • , Samuel C. Pan
    • , Jay Shieh
    • , Makoto Shiojiri
    •  & Miin-Jang Chen
  • Article | | open

    Standard time domain photoacoustic imaging techniques neglect the abundant information encoded in the frequency domain of photoacoustic signals. The authors present an imaging technique that utilizes features in photoacoustic signal power spectra to visualize structures of different scale in image datasets acquired using classical methods.

    • Michael J. Moore
    • , Eno Hysi
    • , Muhannad N. Fadhel
    • , Suzan El-Rass
    • , Yongliang Xiao
    • , Xiao-Yan Wen
    •  & Michael C. Kolios
  • Article | | open

    Applications of high temperature superconductors often use layers of materials, and the application of a magnetic field to these layers can generate disk-like pancake vortices within layers crossed with vortices in between layers. The authors present low temperature magnetic force microscopy imaging on a layered superconducting crystal and demonstrate that they are able to manipulate the crossed vortex lattices, hence making this technique an ideal tool for imaging and manipulating superconducting vortices.

    • Alexandre Correa
    • , Federico Mompeán
    • , Isabel Guillamón
    • , Edwin Herrera
    • , Mar García-Hernández
    • , Takashi Yamamoto
    • , Takanari Kashiwagi
    • , Kazuo Kadowaki
    • , Alexander I. Buzdin
    • , Hermann Suderow
    •  & Carmen Munuera
  • Article | | open

    The electronic structure and transport properties of organic semiconductors are known not to follow standard semiconductor models and a complete understanding is still lacking in the literature. The authors experimentally and theoretically demonstrate the role of phonon–charge interactions on the highest occupied molecular orbital and mobility of the organic semiconductor tetracene.

    • Emily G. Bittle
    • , Adam J. Biacchi
    • , Lisa A. Fredin
    • , Andrew A. Herzing
    • , Thomas C. Allison
    • , Angela R. Hight Walker
    •  & David J. Gundlach
  • Article | | open

    The necessity to design transistors at increasingly smaller scale is at the heart of future technological developments. The authors report a fabrication method to produce uniform electrochemical metallization cells at the nanometer scale with precisely designed geometries and which demonstrate applicable functionality.

    • Bojun Cheng
    • , Alexandros Emboras
    • , Yannick Salamin
    • , Fabian Ducry
    • , Ping Ma
    • , Yuriy Fedoryshyn
    • , Samuel Andermatt
    • , Mathieu Luisier
    •  & Juerg Leuthold
  • Article | | open

    Antiferromagnetic materials were considered unfavorable for spintronic devices due to their zero net magnetic moment however recent research suggests that they may be much more useful than their ferromagnetic counterparts. The authors model an antiferromagnetic system, where the spin textures can be controlled and detected by breaking the inversion symmetry and by applying a magnetic field.

    • Masataka Kawano
    • , Yoshinori Onose
    •  & Chisa Hotta
  • Article | | open

    The valley Hall effect in transition metal dichalcogenides has been studied as a potential mean to develop new electronic and optoelectronic devices. The authors theoretically demonstrate that valley Hall effect can be derived from spin degrees of freedom, which is distinct from the conventional orbital related type.

    • Benjamin T. Zhou
    • , Katsuhisa Taguchi
    • , Yuki Kawaguchi
    • , Yukio Tanaka
    •  & K. T. Law
  • Article | | open

    Quantifying the entropic effects of confined polymers in biological environments or single molecule experiments is a challenging task. Using the same strategy as the chemical potential of solutions, the authors derive a simple entropic force formula, which largely reduces that difficulty and clarifies several recent experiments in confined polymers.

    • Hong-Qing Xie
    •  & Cheng-Hung Chang
  • Article | | open

    Topological superconductors possess Majorana modes at the edge and are important in future quantum computational devices. The authors theoretically demonstrate the Larkin-Ovchinnikov superconducting phase can be topologically non-trivial in certain sandwich structure or iron-based superconductor films and possess a chain of Majorana modes.

    • Lun-Hui Hu
    • , Chao-Xing Liu
    •  & Fu-Chun Zhang
  • Article | | open

    Single layers of transition metal dichalcogenides are expected to be suitable for a number of applications and by stacking layers of different materials on top of each other (heterostructures) an even richer variety of properties can be explored. To this end the authors theoretically investigate cross material exciton states in a heterostructures of MoSe2 and WSe2 layers.

    • Simon Ovesen
    • , Samuel Brem
    • , Christopher Linderälv
    • , Mikael Kuisma
    • , Tobias Korn
    • , Paul Erhart
    • , Malte Selig
    •  & Ermin Malic
  • Article | | open

    Vibration is a promising source of renewable energy, but to be of use it must be efficiently converted into electrical energy. In this paper, the authors propose a poly-stable energy harvesting approach for achieving synergetic multistable vibration which does not rely on external magnetic fields.

    • Huaxia Deng
    • , Yu Du
    • , Zhemin Wang
    • , Jingchang Ye
    • , Jin Zhang
    • , Mengchao Ma
    •  & Xiang Zhong
  • Article | | open

    Negative capacitance describes a phenomenon where the increase in the charge of the capacitor results in decreasing its voltage. The authors put forth a ferroelectric nanodot harboring two polarization domains which stabilize static reversible negative capacitance.

    • I. Luk’yanchuk
    • , Y. Tikhonov
    • , A. Sené
    • , A. Razumnaya
    •  & V. M. Vinokur
  • Article | | open

    Spin torque nano-oscillators are important candidates for several device applications. The authors demonstrate that the combination of two excitation methods, spin-polarised tunnelling current and pure spin Hall current, allows them to achieve greater injected spin current densities and power output than by each individual mechanism.

    • M. Tarequzzaman
    • , T. Böhnert
    • , M. Decker
    • , J. D. Costa
    • , J. Borme
    • , B. Lacoste
    • , E. Paz
    • , A. S. Jenkins
    • , S. Serrano-Guisan
    • , C. H. Back
    • , R. Ferreira
    •  & P. P. Freitas
  • Editorial | | open

    Communications Physics celebrates its first year anniversary of publishing research advances across the physical sciences. We take this opportunity to look back at what we achieved so far and our ambitions for the future.

  • Article | | open

    The intriguing coexistence of superconductivity and magnetism is examined via first-principle calculations in an iron-based superconductor. By calculating the RKKY interaction and bared susceptibility, the authors explained the unchanged Curie temperature and largely suppressed superconducting temperature upon doping observed in experiment.

    • Chenchao Xu
    • , Qijin Chen
    •  & Chao Cao
  • Article | | open

    Research on spin qubit systems for use in quantum computational devices has recently focused on the use of hole spins rather than the conventional single electron spins. The authors report the spin relaxation time of a single hole by developing a novel spin-sensitive charge-latching technique using a GaAs gated double quantum dot device.

    • Alex Bogan
    • , Sergei Studenikin
    • , Marek Korkusinski
    • , Louis Gaudreau
    • , Piotr Zawadzki
    • , Andy Sachrajda
    • , Lisa Tracy
    • , John Reno
    •  & Terry Hargett
  • Article | | open

    Disproving hidden variables is a fundamental test for the validity of quantum mechanics and its nonlocal features. In this work, the authors consider a refined model where the spin magnitudes are conserved. In this way they can show a violation of the hidden variable model by a wider class of quantum states.

    • Paweł Kurzyński
    • , Wiesław Laskowski
    • , Adrian Kołodziejski
    • , Károly F. Pál
    • , Junghee Ryu
    •  & Tamás Vértesi
  • Article | | open

    The origin of the superconductivity in iron-based superconductors remains elusive and whether a mechanism which describes all members can be found is under constant study. Using Raman spectroscopy the authors investigate magnetic ordering in FeSe, and further demonstrate that its properties are distinct among the iron-based superconductors.

    • A. Baum
    • , H. N. Ruiz
    • , N. Lazarević
    • , Yao Wang
    • , T. Böhm
    • , R. Hosseinian Ahangharnejhad
    • , P. Adelmann
    • , T. Wolf
    • , Z. V. Popović
    • , B. Moritz
    • , T. P. Devereaux
    •  & R. Hackl
  • Article | | open

    Artificial spin ices are nanoscale frustrated lattices that mimic many of the properties seen in bulk frustrated materials. In this study, a new method is used to produce a 3D nanostructured frustrated lattice. Magnetic microscopy and simulations are then used to elucidate its underlying spin texture.

    • Andrew May
    • , Matthew Hunt
    • , Arjen Van Den Berg
    • , Alaa Hejazi
    •  & Sam Ladak
  • Article | | open

    The successful isolation of a single layer of graphene has led to great interest in finding other 2D materials with similar electronic characteristics with additional spin-dependent phenomena. In this work, a 2D allotrope of Sn is grown on an Au(111) surface and shown through angle-resolved photoemission spectroscopy to have a linear band dispersion at the zone center and anti-parallel spin polarization.

    • M. Maniraj
    • , B. Stadtmüller
    • , D. Jungkenn
    • , M. Düvel
    • , S. Emmerich
    • , W. Shi
    • , J. Stöckl
    • , L. Lyu
    • , J. Kollamana
    • , Z. Wei
    • , A. Jurenkow
    • , S. Jakobs
    • , B. Yan
    • , S. Steil
    • , M. Cinchetti
    • , S. Mathias
    •  & M. Aeschlimann
  • Article | | open

    The Pauli exclusion principle can be formulated in a generalized form where additional constraints are imposed to the orbital degrees of freedom of electrons. In this work these constraints are experimentally verified on a five qubit quantum computer with an error of one part in one quintillion.

    • Scott E. Smart
    • , David I. Schuster
    •  & David A. Mazziotti
  • Article | | open

    An understanding of charge dynamics and direct observations of charge generation, transfer and recombination is important to help develop and apply various materials for electronic devices. The authors develop a time-resolved electrostatic force microscopy technique to visually observe charge migration on the nanoscale at a sub-microsecond timeframe.

    • Kento Araki
    • , Yutaka Ie
    • , Yoshio Aso
    • , Hiroshi Ohoyama
    •  & Takuya Matsumoto
  • Article | | open

    The properties of strongly correlated materials have been successfully studied via ultrafast dynamics methods. The authors present combined experimental and theoretical results of photo-excitation of LaCoO3 to probe the mechanisms at play behind the semiconductor-to-metal transition at high temperature.

    • Manuel Izquierdo
    • , Michael Karolak
    • , Dharmalingam Prabhakaran
    • , Andrew T. Boothroyd
    • , Andreas O. Scherz
    • , Alexander Lichtenstein
    •  & Serguei L. Molodtsov
  • Article | | open

    The security of communications networks is a fundamental challenge of the current era, particularly with the move towards quantum communications. The authors perform joint transmission of quantum key distribution and up to 100 classical communication channels in the same fiber and report an average secret key rate of 27.2 kbit/s over a 24 h operation period where the classical data rate amounted to 18.3 Tbit/s.

    • Tobias A. Eriksson
    • , Takuya Hirano
    • , Benjamin J. Puttnam
    • , Georg Rademacher
    • , Ruben S. Luís
    • , Mikio Fujiwara
    • , Ryo Namiki
    • , Yoshinari Awaji
    • , Masahiro Takeoka
    • , Naoya Wada
    •  & Masahide Sasaki
  • Article | | open

    Magnetorotational Instability (MRI) has long been considered a possible mechanism to transport angular momentum allowing fast accretion in astrophysical objects, but its standard form with a vertical magnetic field has never been experimentally verified. The authors present an experimental demonstration of a spring-mass analogue of the standard MRI using water as working fluid and a spring to mimic the action of magnetic fields.

    • Derek M. H. Hung
    • , Eric G. Blackman
    • , Kyle J. Caspary
    • , Erik P. Gilson
    •  & Hantao Ji
  • Article | | open

    Silicon carbide is a wide-bandgap semiconductor with outstanding properties for efficient high-power electronic devices whose ultimate potential could not yet be exploited due to the presence of interface traps. The authors develop an experimentally less demanding analysis method that takes such defects into account when determining device parameters.

    • Martin Hauck
    • , Johannes Lehmeyer
    • , Gregor Pobegen
    • , Heiko B. Weber
    •  & Michael Krieger