Electronic and spintronic devices articles within Nature Communications

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  • Article
    | Open Access

    Negative capacitance (NC) effects that could allow steep subthreshold swing (SS) in field-effect transistors (FETs) are still controversially discussed. Here the authors propose a model distinct from the NC concept, taking into account domain flips in multiple-domain ferroelectric/paraelectric gate stack FETs.

    • Xiuyan Li
    •  & Akira Toriumi

  • Article
    | Open Access

    Pushing the low temperature limit of refrigerators beyond milli-kelvin regime holds the promise for new discoveries in the nano-electronic devices. Here, Sarsby et al. achieve 500 micro-kelvin electron temperature using combined on-chip and off-chip nuclear refrigeration techniques.

    • Matthew Sarsby
    • , Nikolai Yurttagül
    •  & Attila Geresdi

  • Article
    | Open Access

    Magnons - collective excitations of electron spins - promise compact and fast electronics. However, the generation of short wave magnons is still quite challenging. Here, the authors demonstrate that by introducing a ferromagnetic layer, conventional coplanar waveguides can be used to efficiently generate such magnons.

    • Ping Che
    • , Korbinian Baumgaertl
    •  & Dirk Grundler

  • Article
    | Open Access

    Molecular electronics holds promise for device miniaturization yet can only be realized by choosing specially designed molecular species to date. Here, Shin et al. show tunable rectifying characteristics in a molecular heterojunction with non-functionalized molecules and two-dimensional semiconductors.

    • Jaeho Shin
    • , Seunghoon Yang
    •  & Gunuk Wang

  • Article
    | Open Access

    Conventional qubit readout methods in silicon spin qubits destroy the quantum state, precluding any further computations based on the outcome. Here, the authors demonstrate quantum non-demolition readout using a second qubit of the same kind, making for a scalable approach.

    • J. Yoneda
    • , K. Takeda
    •  & S. Tarucha

  • Article
    | Open Access

    Controlling chaotic behavior in spintronic devices is promising for signal-processing applications. Here, the authors unveil the symbolic patterns hidden in the magnetization dynamics of a nanocontact vortex oscillator and detail how to control chaos complexity with a single experimental parameter.

    • Myoung-Woo Yoo
    • , Damien Rontani
    •  & Joo-Von Kim

  • Article
    | Open Access

    Hybrid organic-inorganic perovskites (HOIP) have high potential for spintronics applications. Using the circular photogalvanic effect the authors demonstrate the existence of Rashba-splitting in the continuum bands of a 2D layered HOIP that results from inversion symmetry breaking along the growth direction.

    • Xiaojie Liu
    • , Ashish Chanana
    •  & Z. V. Vardeny

  • Article
    | Open Access

    Designing intelligent power devices that can directly control the output power modulation responses to external stimuli at a rapid speed remains a challenge. Here, the authors report a strain-controlled power device by using the cantilever-structured AlGaN/AlN/GaN HEMT to emulate human reflex process.

    • Shuo Zhang
    • , Bei Ma
    •  & Zhong Lin Wang

  • Article
    | Open Access

    Negative Capacitance field-effect-transistor has long been touted as a steep-slope logic switch. Here, the authors present a lucid formulation that reveals the intrinsic limitation of NC-FETs in achieving steep-slope switching characteristics and highlights their more practical role in saving the voltage losses in modern FETs.

    • Wei Cao
    •  & Kaustav Banerjee

  • Article
    | Open Access

    Spin caloritronics offers advantages for the thermal management of spintronic devices. Here, the authors demonstrate that the direction of heat currents generated by spin-caloritronic phenomena can be changed by illuminating magnetic materials with visible light.

    • Jian Wang
    • , Yukiko K. Takahashi
    •  & Ken-ichi Uchida

  • Article
    | Open Access

    Exciton condensation may emerge at room temperature in topological materials with strong Coulomb interactions and vanishing electron effective mass. Here, Hou et al. report the formation of excitons in Bi2-xSbxSe3 nanoribbons, which can transport over hundreds of micrometres before recombination up to 40 K, further implying exciton condensation.

    • Yasen Hou
    • , Rui Wang
    •  & Dong Yu

  • Article
    | Open Access

    Magnetic anti-skyrmions—chiral spin textures that could find applications in spintronics—have been recently observed in inverse tetragonal Heusler Mn1.4Pt0.9Pd0.1Sn. Here, the authors observe anti-skyrmions in thin films of Mn1.4Pt0.9Pd0.1Sn over a wide range of temperature and magnetic fields.

    • Rana Saha
    • , Abhay K. Srivastava
    •  & Stuart S. P. Parkin

  • Article
    | Open Access

    Quantum tomographic techniques enable the complete characterisation of continuous variable quantum states. Here the authors demonstrate a broadband tomography protocol for single electrons that goes beyond the bandwidth restrictions of existing methods.

    • J. D. Fletcher
    • , N. Johnson
    •  & M. Kataoka

  • Article
    | Open Access

    Thermally activated delayed fluorescence (TADF) emitters deliver impressive performance in sophisticated multilayer devices. Here, the authors report efficient TADF emission from light-emitting electrochemical cells that feature a solution-processed active layer in between two air-stable electrodes.

    • Petter Lundberg
    • , Youichi Tsuchiya
    •  & Ludvig Edman

  • Article
    | Open Access

    Designing efficient, scalable and low-thermal-budget 2D Materials for 3D integration remains a challenge. Here, the authors report the development of a hybrid-(solution-processed-exfoliated) integration of 2D Material based 1T1R which uses a multilayer WSe2 p-FET and a multilayer printed WSe2 RRAM.

    • Maheswari Sivan
    • , Yida Li
    •  & Aaron Voon-Yew Thean

  • Article
    | Open Access

    Topological kink modes are peculiar edge excitations that take place at domain boundaries of magnetic fields inside homogeneous materials. Here, the authors experimentally observe kink magnetoplasmons in a 2D electron gas using custom-shaped strong permanent magnets on top of a GaAs/AlGaAs heterojunction.

    • Dafei Jin
    • , Yang Xia
    •  & Xiang Zhang

  • Article
    | Open Access

    Realizing phototransistors based on hybrid perovskite heterostructures with tuneable photodetection remains a challenge. Here, the authors integrate metal-halide perovskites into organic semiconductors to design hybrid heterojunction phototransistors with state-of-the-art performance.

    • Yen-Hung Lin
    • , Wentao Huang
    •  & Henry J. Snaith

  • Article
    | Open Access

    Malz et al. show how electromagnetic driving leads to amplification of topological magnon edge states and thus a large steady-state magnon edge current. Their approach should yield experimental signatures of topological magnon edge states and has potential applications in magnon spintronics.

    • Daniel Malz
    • , Johannes Knolle
    •  & Andreas Nunnenkamp

  • Article
    | Open Access

    Though solution-processed conjugated polymers with inverted temperature activated transport have been reported, the origin of this behaviour is unclear. Here, the authors realize temperature-independent electron transport above 280 K in a donor-acceptor copolymer through microstructural engineering.

    • Alessandro Luzio
    • , Fritz Nübling
    •  & Mario Caironi

  • Article
    | Open Access

    For use in electronic and quantum applications, controlling the magnetism of a system through non-magnetic means is important. Here, the authors demonstrate a unidirectional non-magnetic spin-switch device using spin-momentum coupling in Bose–Einstein condensates of ultracold Rb-87 atoms.

    • Maren E. Mossman
    • , Junpeng Hou
    •  & Peter Engels

  • Article
    | Open Access

    Spin orbit torque enables an innovative method of manipulating the magnetization of ferromagnets by current injection. Here, Jiang et al. demonstrate efficient full spin–orbit torque switching with an activation current density of ∼3.4 × 105 A cm−2 in a single layer ferromagnetic semiconductor GaMnAs.

    • Miao Jiang
    • , Hirokatsu Asahara
    •  & Masaaki Tanaka

  • Article
    | Open Access

    The chirality provides new route for organic materials to be implemented in the spintronics applications. Here the authors show a solid-state spin-filtering device in an organic spin-valve structure enabled by light irradiation induced change in the chirality of molecule.

    • Masayuki Suda
    • , Yuranan Thathong
    •  & Hiroshi M. Yamamoto

  • Article
    | Open Access

    Charge transport in organic diodes based on conjugated polymers is severely limited by the high water-related trap concentration and energetic disorder. Here, the authors report high-mobility trap-free charge transport in low-disorder conjugated polymers by incorporating small molecular additives.

    • Mark Nikolka
    • , Katharina Broch
    •  & Henning Sirringhaus

  • Article
    | Open Access

    Designing high radiation efficiency antennas for portable transmitters in low frequency communication systems remains a challenge. Here, the authors report on using piezoelectricity to more efficiently radiate while achieving a bandwidth eighty three times higher than the passive Bode-Fano limit.

    • Mark A. Kemp
    • , Matt Franzi
    •  & Robert Sparr

  • Article
    | Open Access

    Conflicting mechanisms have been proposed to explain the sub-bandgap turn-on behaviour of heterojunction organic light-emitting diodes (OLEDs). Here, by probing and modifying the OLED heterojunction, the authors show that band-to-band recombination is the most likely radiative recombination process.

    • Sebastian Engmann
    • , Adam J. Barito
    •  & David J. Gundlach

  • Article
    | Open Access

    Hybrid organic-inorganic trihalide perovskites can make remarkable optoelectronic devices but their spin characteristics are less investigated. Here Wang et al. show spin-polarized carriers injection into methylammonium lead bromide films with long lifetime and realize spin LEDs and spin valves.

    • Jingying Wang
    • , Chuang Zhang
    •  & Z. Valy Vardeny

  • Article
    | Open Access

    Controlling the Néel vector switching is crucial to the antiferromagnetic spintronics but so far limited to 90° reorientations. Here the authors report electrical Néel vector reversal and its detection in a fully compensated collinear antiferromagnet (AF) by exploiting the broken time reversal and spatial inversion symmetries of the AF.

    • J. Godinho
    • , H. Reichlová
    •  & J. Wunderlich

  • Article
    | Open Access

    The evolution of the quantum Hall state from bulk spectrum to edge state remains obscure. Here, Patlatiuk and Scheller et al. observe magnetic compression against a hard edge followed by motion into the bulk and depopulation of the integer quantum Hall edge states, in agreement with the bulk-to-edge correspondence.

    • T. Patlatiuk
    • , C. P. Scheller
    •  & D. M. Zumbühl

  • Article
    | Open Access

    Circular photocurrents emerge in atomically thin transition metal dichalcogenides as a result of circular photogalvanic and photon drag effects. Here, the authors identify two different circular photocurrent contributions in monolater MoSe2, dominant at different voltages and with different dependence on illumination wavelength and incidence angles.

    • Jorge Quereda
    • , Talieh S. Ghiasi
    •  & Caspar H. van der Wal

  • Article
    | Open Access

    The ability to electrically control spintronic materials significantly widens their potential for integration into devices, but it is difficult to achieve in metals with high carrier densities. Here the authors demonstrate ionic liquid gated control of the inverse spin Hall effect in platinum.

    • Sergey Dushenko
    • , Masaya Hokazono
    •  & Masashi Shiraishi

  • Article
    | Open Access

    Layered van der Waals compounds offer opportunities to visit new physical phenomena in two dimensional materials. Here the authors report large tunneling magnetoresistance through exfoliated CrI3 crystals and attribute its evolution to the multiple transitions to different magnetic states.

    • Zhe Wang
    • , Ignacio Gutiérrez-Lezama
    •  & Alberto F. Morpurgo

  • Article
    | Open Access

    The study of parity-time (PT) symmetric optical systems has recently attracted much attention. Here, the authors experimentally study an anti-PT symmetric circuit system and observe an exceptional point with an inverse PT symmetry breaking transition and energy-difference conserving dynamics.

    • Youngsun Choi
    • , Choloong Hahn
    •  & Seok Ho Song

  • Article
    | Open Access

    The microstructure of organic semiconductors affects their transport properties, but directly probing this relationship is challenging. He et al. show that step edges act as electron traps on the surfaces of n-type single crystals, resulting in a field effect transistor mobility that depends on step density.

    • Tao He
    • , Yanfei Wu
    •  & C. Daniel Frisbie

  • Article
    | Open Access

    Exploring the magnetism in the van der Waals materials facilitates two dimensional spintronic devices. Here the authors demonstrate the evolution of magnetic behavior, strong perpendicular magnetic anisotropy and existence of magnetic coupling between atomic layers in Fe3GeTe2 nanoflakes by varying the layer thickness.

    • Cheng Tan
    • , Jinhwan Lee
    •  & Changgu Lee

  • Article
    | Open Access

    In absence of dangling bonds, van der Waals layered crystals are expected to have inert surfaces. In contrast, here the authors show presence of surface electron accumulation in MoS2, with a surface electron concentration nearly four orders of magnitude higher than that of MoS2 inner bulk.

    • M. D. Siao
    • , W. C. Shen
    •  & C.-M. Cheng

  • Article
    | Open Access

    Perpendicular magnetic tunnel junctions with large tunnel magnetoresistance and low junction resistance are promising for the magnetic random access memories. Here the authors achieve the spin-transfer-torque switching in perpendicular magnetic tunnel junctions with 249% tunnel magnetoresistance and low resistance-area product.

    • Mengxing Wang
    • , Wenlong Cai
    •  & Weisheng Zhao

  • Article
    | Open Access

    Polymer monolayer field-effect transistors hold promise for faster circuits, but their performance is currently limited by the polymer packing disorder. Li et al. pre-aggregate polymers in a solution to achieve high carrier mobility of 3 cm2 V−1s−1 in monolayers and utilize them in integrated circuits.

    • Mengmeng Li
    • , Deepthi Kamath Mangalore
    •  & Kamal Asadi

  • Article
    | Open Access

    Silicon is an important material in spintronics but its inefficiency in light emission limits the optical probes for spin transport. Here Chiodi et al. develop ultra-doped silicon light-emitting devices and show that electroluminescence can be used to probe spin phenomena in silicon even at room temperature.

    • F. Chiodi
    • , S. L. Bayliss
    •  & A. D. Chepelianskii

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