Electronics, photonics and device physics articles within Nature Communications

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  • Article
    | Open Access

    Designing high efficient optoelectronic memory remains a challenge. Here, the authors report a novel optoelectronic memory device based on a photosensitive dielectric that is an insulator in dark and a semiconductor under irradiation with multilevel storage ability, low energy consumption and good compatibility.

    • Rui Zhu
    • , Huili Liang
    •  & Zengxia Mei

  • Article
    | Open Access

    Many proposed spintronic devices, where spin, rather than charge is used for information processing, rely on the combination of multiple materials, for example, heavy metals and magnetic materials in spin-orbit torque devices. Here, Gao et al. show how the interface between a ferromagnet and a semimetal, Ni81Fe19/Bi0.1Sb0.9, can result in a barrier-mediated spin-orbit torques

    • Tenghua Gao
    • , Alireza Qaiumzadeh
    •  & Kazuya Ando

  • Article
    | Open Access

    The scattering of light by small particles plays a central role in a myriad of fields. Here, the authors demonstrate a super dipole resonance that arises when two resonant modes of a small particle interfere, overcoming a widely accepted limitation to the cross section.

    • Adrià Canós Valero
    • , Hadi K. Shamkhi
    •  & Alexander S. Shalin

  • Article
    | Open Access

    Smooth topological photonic interfaces lead to less localized boundary modes which improves their guiding characteristics in both spin- and valley Hall metasurfaces. The modes become insensitive to the lattice details, showcasing improved bandgap crossing and longer propagation distances.

    • Anton Vakulenko
    • , Svetlana Kiriushechkina
    •  & Alexander B. Khanikaev

  • Article
    | Open Access

    Owing to the nonequilibrium nature, photonic topological phenomena can involve multiple band gaps. Here the authors report on the discovery of a class of hybrid topological photonic crystals that host quantum anomalous Hall and valley Hall phases simultaneously.

    • Yanan Wang
    • , Hai-Xiao Wang
    •  & Guang-Yu Guo

  • Article
    | Open Access

    The practical device application of transition-metal dichalcogenide superconductors (TMDSCs) is limited by their environmental instability. Here, the authors report a generic, non-destructive, and scalable strategy to fabricate TMDSC nanocircuits via the topotactic conversion of prepatterned metallic precursors.

    • Xiaohan Wang
    • , Hao Wang
    •  & Peiheng Wu

  • Article
    | Open Access

    The bulk photovoltaic effect (BPVE) is a nonlinear optical effect offering a promising approach to overcome the limitations of conventional photovoltaics. Here, the authors report the observation of BPVE-induced photocurrents at the edges of 2D semiconductors embedded in various van der Waals heterostructures.

    • Zihan Liang
    • , Xin Zhou
    •  & Xiaolong Chen

  • Article
    | Open Access

    Metallic resistance of two-dimensional electron gases normally increases with temperature increasing. Here, the authors find a resistance decrease with increasing temperature at very low temperatures in two-dimensional electron metal described by Fermi liquid theory.

    • Sujatha Vijayakrishnan
    • , F. Poitevin
    •  & G. Gervais

  • Article
    | Open Access

    In some magnetic materials, it is possible to magnetize or demagnetize the system on extremely short timescales. The angular momentum carried by the magnetic state must be generated or dissipated. Here, Kang et al find a significant correlation between spin current and the magnetization dynamics in the ultrafast magnetization processes, implying angular momentum transfer from electrons to magnons.

    • Kyuhwe Kang
    • , Hiroki Omura
    •  & Gyung-Min Choi

  • Article
    | Open Access

    Removing excess energy (cooling) and reducing noise in superconducting quantum circuits is central to improved coherence. Lucas et al. demonstrate cooling of a superconducting resonator and its noisy environment to sub-mK temperatures by immersion in liquid 3He.

    • M. Lucas
    • , A. V. Danilov
    •  & S. E. de Graaf

  • Article
    | Open Access

    Absorption, transmission and reflection are three processes characterizing optical devices. Absorption allows for signal conversion and transmission is important for signal transfer, however, reflection is frequently detrimental to device performance. Here, Qian et al demonstrate a magnonic device with controllable absorption and transmission while maintain zero reflection.

    • Jie Qian
    • , C. H. Meng
    •  & C. -M. Hu

  • Article
    | Open Access

    The proximity effect in semiconductor-superconductor nanowires is expected to generate an induced gap in the semiconductor. Here, the authors study the superconducting proximity effect in InSb nanowires with an Al/Pt shell, demonstrating control of the induced gap using electric and magnetic fields.

    • Nick van Loo
    • , Grzegorz P. Mazur
    •  & Leo P. Kouwenhoven

  • Article
    | Open Access

    Designing efficient selector devices remains a challenge. Here, the authors propose a CuAg alloy-based selector with excellent ON/OFF ratio and thermal stability. It can effectively suppress the sneak-path current in 1S1R arrays, making it suitable for storage class memory and neuromorphic computing applications.

    • Xi Zhou
    • , Liang Zhao
    •  & Dongdong Li

  • Article
    | Open Access

    In a magneto-electric material, the magnetic and electric properties are coupled. This coupling allows the magnetic order to be controlled by electric stimuli, making magnetoelectric materials promising candidates for new data storage technologies. Here Gu et al demonstrate a magnetoelectric effect in a van der Waals antiferromagnetic CrOCl which persists down to monolayer, and using this realize a multi-state data storage device.

    • Pingfan Gu
    • , Cong Wang
    •  & Yu Ye

  • Article
    | Open Access

    Non-reciprocal critical current in a Josephson junction device is known as the Josephson diode effect. Here, the authors observe such an effect in 3-terminal Josephson devices based on InAs two-dimensional electron gas proximitized by an epitaxial Al layer.

    • Mohit Gupta
    • , Gino V. Graziano
    •  & Vlad S. Pribiag

  • Article
    | Open Access

    Electrically switching perpendicular magnetized ferromagnets using spin-orbit torques without assisting magnetic fields is a major goal for spintronics. Recently, several works have proposed using out-of-plane spin polarized currents to achieve this, but these rely on antiferromagnetic metals with low Neel temperatures. Here, Wang et al show that such out-of-plane spin polarization driven switching can be achieved using the interface of an antiferromagnetic insulator and a heavy metal.

    • Mengxi Wang
    • , Jun Zhou
    •  & Yong Jiang

  • Article
    | Open Access

    Emission enhancement and extraction from quantum emitters is a major challenge for photon sources in e.g. quantum photonic networks. Here the authors propose a broadband waveguide platform which allows to boost, extract, and guide quantum emission within integrated photonic networks.

    • Nicholas A. Güsken
    • , Ming Fu
    •  & Rupert F. Oulton

  • Article
    | Open Access

    Multimodal cognitive computing task is an important research content in the field of AI. Here, the authors propose an efficient sensory memory processing system, which can process sensory information and generate synapse-like and multiwavelength light-emitting output for efficient multimodal information recognition.

    • Liuting Shan
    • , Qizhen Chen
    •  & Huipeng Chen

  • Article
    | Open Access

    van der Waals magnetic materials, which retain magnetism down to a single two-dimensional layer of atoms, have great technological potential for spin-based information processing, however, typical approaches to measure their spin dynamics are often hampered by the small number of spins in a single atomic layer compared to three dimensional materials. Here, Zollitsch et al present a methodology for the detection of spin dynamics in van der Waals magnets via photon-magnon coupling between it and a superconducting resonator, with potential to resolve spin dynamics down to a single monolayer.

    • Christoph W. Zollitsch
    • , Safe Khan
    •  & Hidekazu Kurebayashi

  • Review Article
    | Open Access

    The lack of a standardized approach for the characterization of the performance of 2D photodetectors represents an important obstacle towards their industrialization. Here, the authors propose practical guidelines to characterize their figures of merit and analyse common situations where their performance can be misestimated.

    • Fang Wang
    • , Tao Zhang
    •  & Weida Hu

  • Article
    | Open Access

    Superconductivity has been discovered in atomically thin two-dimensional van der Waals materials by resistance measurements, but magnetic measurements are lacking. Here, the authors use a micron-scale SQUID magnetometer to measure the superfluid response of exfoliated MoS2.

    • Alexander Jarjour
    • , G. M. Ferguson
    •  & Katja C. Nowack

  • Article
    | Open Access

    The device efficiency of organic solar cells is usually limited by the inherent energy loss during carrier transport. Here, authors integrate bulk heterojunction organic photovoltaic with vertical field effect transistor, leading to reduced energy loss below 0.2 eV as controlled by the gate voltage.

    • Xiaomin Wu
    • , Changsong Gao
    •  & Huipeng Chen

  • Article
    | Open Access

    The authors combined optical traps and frequency combs to create new acoustic technology – a mechanical frequency comb. The generation of this comb does not require any precision control, making it uniquely positioned for sensing, metrology, and quantum technology.

    • Matthijs H. J. de Jong
    • , Adarsh Ganesan
    •  & Richard A. Norte

  • Article
    | Open Access

    Previous demonstrations of electrically and optically detected magnetic resonance in OLED materials have established these systems as promising candidates for magnetic field sensing. Here the authors present an integrated OLED-based device for magnetic field imaging with sub-micron resolution.

    • Rugang Geng
    • , Adrian Mena
    •  & Dane R. McCamey

  • Article
    | Open Access

    Quantum sensors based on NV centers in diamond are well established, however the sensitivity of detection of high-frequency radio signals has been limited. Here the authors use nanoscale field-focusing to enhance sensitivity and demonstrate ranging for GHz radio signals in an interferometer set-up.

    • Xiang-Dong Chen
    • , En-Hui Wang
    •  & Fang-Wen Sun

  • Article
    | Open Access

    Implementing MEMS resonators calls for detailed microscopic understanding of the devices and imperfections from microfabrication. Lee et al. imaged super-high-frequency acoustic resonators with a spatial resolution of 100 nm and a displacement sensitivity of 10 fm/√Hz. Individual overtones, spurious modes, and acoustic leakage are also visualized and analyzed.

    • Daehun Lee
    • , Shahin Jahanbani
    •  & Keji Lai

  • Article
    | Open Access

    A mismatch between quasi-Fermi level splitting and open-circuit voltage is detrimental to wide bandgap perovskite pin solar cells. Here, through theoretical and experimental approaches, the authors optimize n- and p-type interfaces to achieve open-circuit voltage of 1.29 V and T80 of 3500 h at 85 °C.

    • Pietro Caprioglio
    • , Joel A. Smith
    •  & Henry J. Snaith

  • Article
    | Open Access

    Applications of solid-state qubits in large-scale quantum networks are limited by power and density constraints associated with microwave driving. Here the authors propose a programmable architecture based on diamond color centers driven by electric or strain fields for reduced cross-talk and power consumption.

    • Hanfeng Wang
    • , Matthew E. Trusheim
    •  & Dirk R. Englund

  • Article
    | Open Access

    Electron spins in diamond allow magnetometry with high sensitivity, but the bandwidth in the microwave regime is limited to a narrow band around their resonance frequency. Here, the authors solve this problem by coupling the spins to a thin film of yttrium iron garnet, exploiting the non-linear spin-wave dynamics of the magnet.

    • Joris J. Carmiggelt
    • , Iacopo Bertelli
    •  & Toeno van der Sar

  • Article
    | Open Access

    Spin defects in 2D hBN are promising for magnetic field sensing but suffer from short spin coherence times. Here the authors extend the coherence time for an ensemble of spins in hBN to 4 microseconds by using a continuous microwave drive and demonstrate qubit control in a protected spin space.

    • Andrew J. Ramsay
    • , Reza Hekmati
    •  & Isaac J. Luxmoore

  • Article
    | Open Access

    Electron optics draws upon the resemblance between electron and optical waves. Here, the authors report on the observation of electron mode formation in open cavity resonators realized in a GaAs/AlGaAs two-dimensional electronic gas.

    • Hwanchul Jung
    • , Dongsung T. Park
    •  & Hyung Kook Choi

  • Article
    | Open Access

    The nonlinear Hall effect (NLHE) results in a second-harmonic transverse voltage in response to alternating longitudinal current in zero magnetic field and has so far only been observed at low temperatures in bulk materials. Here, the authors observe bulk NLHE at room temperature in the Dirac material BaMnSb2, which will provide a large photocurrent for applications in THz detection.

    • Lujin Min
    • , Hengxin Tan
    •  & Zhiqiang Mao

  • Article
    | Open Access

    Chemical vapor deposition (CVD) is a versatile method to synthesize 2D materials, but usually requires high growth temperatures. Here, the authors report a BiOCl-assisted CVD approach to grow 2D nanosheets from 27 different layered and nonlayered materials at temperatures <500 °C, which are compatible with back-end-of-the-line industrial processes.

    • Biao Qin
    • , Muhammad Zeeshan Saeed
    •  & Xidong Duan

  • Article
    | Open Access

    Here, the authors predict that plasmons in two-dimensional materials with closely located electron and hole Fermi pockets can be amplified when an electrical current bias is applied along the displaced electron-hole pockets, without the need for an external gain medium.

    • Sang Hyun Park
    • , Michael Sammon
    •  & Tony Low

  • Article
    | Open Access

    ‘Giant atom’ physics occurs when the size of the atomic system becomes comparable to the wavelength of the light it interacts with. For atoms, such a regime is impossible to reach, however, for artificial atomic systems such ‘giant atom’ physics can be explored. Here, Wang et al demonstrate giant spin ensembles, consisting of magnetic spheres coupled to a microwave waveguide.

    • Zi-Qi Wang
    • , Yi-Pu Wang
    •  & J. Q. You

  • Article
    | Open Access

    Future optical devices, e.g., for AR and VR, will require sophisticated flat metaoptics with unique optical functionalities. The authors demonstrate a metaobjective based on electrically switchable metallic polymer metalenses, whose optical states and focal length is adjustable via CMOS compatible voltages.

    • Julian Karst
    • , Yohan Lee
    •  & Harald Giessen

  • Article
    | Open Access

    High thermal conductivity electronic materials are critical for next-generation electronics and photonics. Here, the authors report isotropic high thermal conductivity of 3C-SiC wafers exceeding 500 W m−1K−1.

    • Zhe Cheng
    • , Jianbo Liang
    •  & David G. Cahill

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