Electronic properties and materials articles within Nature Communications

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  • Article
    | Open Access

    The complex coupling between charge-carriers and phonons in bismuth oxyiodide (BiOI) are uncovered, showing how carrier localisation is avoided and long transport lengths achieved. As a result, BiOI is revealed to be highly effective for X-ray detection.

    • Robert A. Jagt
    • , Ivona Bravić
    •  & Robert L. Z. Hoye

  • Article
    | Open Access

    Exciton-polaritons present opportunities for quantum photonics, next generation qubits, and tuning material photophysics. Here Laitz et al. study the temperature dependence of 2D perovskite microcavity polaritons, revealing material-specific relaxation mechanisms towards the control of polariton momentum.

    • Madeleine Laitz
    • , Alexander E. K. Kaplan
    •  & Vladimir Bulović

  • Article
    | Open Access

    Classical hydrodynamics applies to electron fluids as well, provided the system has a high electron–electron collision rate. Now, model calculations show that regimes in which other scattering processes are at play can explain hydrodynamic electron transport in thin flakes of the 2D material WTe2.

    • Yotam Wolf
    • , Amit Aharon-Steinberg
    •  & Tobias Holder

  • Article
    | Open Access

    Topological properties can theoretically be generated by electron correlation rather than spin-orbit coupling. Here, the authors report a correlation-driven topological insulator state in the organic material α-(BETS)2I3, and its current-driven switching to a Dirac semimetal state.

    • Tetsuya Nomoto
    • , Shusaku Imajo
    •  & Yoshimitsu Kohama

  • Article
    | Open Access

    Electron-phonon coupling is thought to be too weak to be responsible for the superconducting Cooper pairing of the kagome metals AV3Sb5, but an experimental measurement is lacking. Here, the authors use ARPES measurements to find that electron-phonon coupling in CsV3Sb5 is strong enough to support the experimental superconducting transition.

    • Yigui Zhong
    • , Shaozhi Li
    •  & Kozo Okazaki

  • Article
    | Open Access

    A linear Hall response in isolated systems with time reversal symmetry is forbidden by Onsager relations. Here the authors show that this restriction is lifted by interlayer hopping in twisted bilayers, leading to a linear charge Hall effect under time reversal symmetry.

    • Dawei Zhai
    • , Cong Chen
    •  & Wang Yao

  • Article
    | Open Access

    The Mott insulator κ-(BEDT-TTF)2Cu2(CN)3 has been a strong candidate for a gapless quantum spin liquid, but recent experiments suggested a spin-gapped phase below 6 K. Pustogow et al. study the entropy of this phase by driving the system through the metal-insulator transition with a strain engineering approach.

    • A. Pustogow
    • , Y. Kawasugi
    •  & N. Tajima

  • Article
    | Open Access

    When entering a ferromagnet, a spin-singlet supercurrent decays rapidly, while a spin-triplet supercurrent can extend over much longer distances. Here, the authors observe long-range, spin triplet supercurrent in lateral Josephson junctions constructed using the van der Waals metallic ferromagnet Fe3GeTe2 as the weak link.

    • Guojing Hu
    • , Changlong Wang
    •  & Bin Xiang

  • Article
    | Open Access

    Here, the authors design NaNbO3 based ceramics with the aim of enabling a field-induced reversible phase transformation between the antiferroelectric and ferroelectric phases, which manifests itself in a well-defined double hysteresis loop in the P-E hysteresis curve.

    • Nengneng Luo
    • , Li Ma
    •  & Shujun Zhang

  • Article
    | Open Access

    A quantized plateau is typically considered to be the feature of a fractional quantum Hall state. Yan et al. report a series of plateaus quantized at unusual fractions in a confined two-dimensional electron gas, which is attributed to enhanced density in the confined region.

    • Jiaojie Yan
    • , Yijia Wu
    •  & Xi Lin

  • Article
    | Open Access

    The role of stoichiometric defects in the superconducting polyhydride LaH10±δ has received little attention so far. Here, the authors use molecular-dynamics simulations to show that a small amount of stoichiometric defects will cause quantum proton diffusion in the otherwise rigid lanthanum lattice.

    • Hui Wang
    • , Pascal T. Salzbrenner
    •  & Yansun Yao

  • Article
    | Open Access

    A nonreciprocal critical current is known as the superconducting diode effect (SDE). Here, the authors use SQUID-on-tip to study SDE in a EuS/Nb bilayer and find that the stray field from magnetized EuS creates screening currents in the Nb, which lead to SDE by affecting vortex flow dynamics.

    • Alon Gutfreund
    • , Hisakazu Matsuki
    •  & Yonathan Anahory

  • Article
    | Open Access

    Significant attention has been devoted to understanding the low-electric-field properties of carriers in moiré graphene, but high-electric-field transport has not been as well explored. Here, the authors find non-monotonic transport behavior at moiré minigaps due to competition between inter-band tunneling and coupling to out-of-equilibrium phonons.

    • Jubin Nathawat
    • , Ishiaka Mansaray
    •  & Jonathan P. Bird

  • Article
    | Open Access

    Previous demonstrations of quantum interference in solids have mainly been limited to intra-layer transport within single conductors. Zhu et al. report a new type of inter-layer quantum interference in graphene-based double-layer devices, due to interference between carrier diffusion paths across the constituent layers.

    • Lijun Zhu
    • , Xiaoqiang Liu
    •  & Changgan Zeng

  • Article
    | Open Access

    Spin ice compounds are typically insulating and introducing carriers can destroy the spin ice state, making integration into electronic devices problematic. Here the authors report a transport response to an ice-rule-breaking transition in a heterostructure of a pyrochlore spin ice and a nonmagnetic metal.

    • Han Zhang
    • , Chengkun Xing
    •  & Jian Liu

  • Article
    | Open Access

    Doping is widely adopted to make organic semiconductors more conductive, yet the impact of molecular electronic properties on doping performance is still not fully understood. Armleder et al. compute host-dopant interactions and show that a short-range overscreening effect strongly affects conductivity.

    • Jonas Armleder
    • , Tobias Neumann
    •  & Artem Fediai

  • Article
    | Open Access

    Cuprate superconductors are known for their intertwined interactions and coexistence of competing orders. Here, the authors observe a Fano resonance in the nonlinear THz response of La2-xSrxCuO4, which may arise from a coupling between superconducting and charge-density-wave amplitude fluctuations.

    • Hao Chu
    • , Sergey Kovalev
    •  & Stefan Kaiser

  • Article
    | Open Access

    Characterization of the solid electrolyte interphase formed on Li-ion battery electrodes presents significant experimental challenges. Here the authors use atomic force microscopy-based force-spectroscopy techniques to depict the initial interphase formation in two different electrolyte classes.

    • Yue Chen
    • , Wenkai Wu
    •  & Oleg V. Kolosov

  • Article
    | Open Access

    Signatures of an excitonic insulator have been reported in several two-dimensional materials. Here the authors report electronic properties of monolayer ZrTe2 from ARPES and STM measurements that are consistent with the preformed exciton gas phase, a precursor for the excitonic insulator.

    • Yekai Song
    • , Chunjing Jia
    •  & Shujie Tang

  • Article
    | Open Access

    The mechanism of the charge density wave in kagome metals is under intense debate. Here, by using a combination of diffuse scattering and inelastic x-ray scattering, the authors show that the charge density wave transition in (Cs,Rb)V3Sb5 is of the order-disorder type.

    • D. Subires
    • , A. Korshunov
    •  & S. Blanco-Canosa

  • Article
    | Open Access

    A distinct dependence of the superconducting transition temperature on carrier density for electron gases formed at KTaO3 interfaces is reported. In addition, these interfaces are shown to play a role in mediating superconductivity in this system. The crystallographic orientation and carrier density dependent superconductivity at KTaO3 interfaces can be explained by Cooper pairing via inter-orbital interactions and quantum confinement.

    • Changjiang Liu
    • , Xianjing Zhou
    •  & Anand Bhattacharya

  • Article
    | Open Access

    Superconductivity was discovered in the bismuthate (Ba,K)BiO3 soon after the discovery of the cuprate high-temperature superconductors. Here, the authors study (Ba,K)BiO3 using diffuse x-ray scattering and Monte Carlo modeling, finding that nanoscale structural correlations break inversion symmetry locally, while preserving inversion symmetry on average over large length scales.

    • S. Griffitt
    • , M. Spaić
    •  & M. Greven

  • Article
    | Open Access

    Superconductivity in the cuprates is known to be intertwined with charge and spin density waves. Here, the authors study the prototypical cuprate La1.885Sr0.115CuO4 via x-ray scattering and discover a sudden increase in the charge-density-wave amplitude upon entering the superconducting-vortex-liquid state at high magnetic field.

    • J.-J. Wen
    • , W. He
    •  & Y. S. Lee

  • Article
    | Open Access

    Kagome metals continue to attract interest due to the coexistence of electronic correlations and band topology. Here the authors use proton gating to modulate disorder and carrier density in CsV3Sb5 nanoflakes, and show its effect on superconductivity, charge density wave and anomalous Hall effect.

    • Guolin Zheng
    • , Cheng Tan
    •  & Lan Wang

  • Article
    | Open Access

    Recent experiments have found a two-fold van Hove singularity (TvHS) in the kagome metal CsV3Sb5. Here, the authors use perturbative renormalization group calculations to find that the leading instability in a model of TvHS is a chiral condensate of electron-hole pairs, breaking time-reversal symmetry.

    • Harley D. Scammell
    • , Julian Ingham
    •  & Oleg P. Sushkov

  • Article
    | Open Access

    Hyperbolic lattices emulate particle dynamics equivalent to those in negatively curved space, with connections to general relativity. Here, the authors use electric circuits with a novel complex-phase circuit element to simulate hyperbolic graphene with negligible boundary contributions.

    • Anffany Chen
    • , Hauke Brand
    •  & Igor Boettcher

  • Article
    | Open Access

    Much recent work has focused on the kagome metals AV3Sb5 (A = K, Rb, and Cs), but studies of the monolayer form are only just beginning. Here, the authors theoretically study monolayer kagome metals, and predict modified van Hove singularities that lead to charge-density-wave doublets and d-wave superconductivity.

    • Sun-Woo Kim
    • , Hanbit Oh
    •  & Youngkuk Kim

  • Article
    | Open Access

    Kondo systems offer a rich platform to study the interplay between strong correlations and topology. Here the authors observe a large anomalous Hall conductivity in a Kondo ferromagnet USbTe, which they attribute to the Berry curvature originating from flat bands induced by the Kondo hybridization.

    • Hasan Siddiquee
    • , Christopher Broyles
    •  & Sheng Ran

  • Article
    | Open Access

    Pyroelectricity promises viable heat harvesting and sensing. Here, the authors identify transverse polarization ripple in pyroelectrics via heat localization and propagation decoupling and offer competitive power output to solar thermoelectrics.

    • Yi Zhou
    • , Tianpeng Ding
    •  & Ghim Wei Ho

  • Article
    | Open Access

    Bilayer sensors and sensor arrays with a catalytic CeO2 filter are proposed as a facile platform for high-performance gas sensors and electronic noses. Authors show the bilayer sensors enhance selectivity toward aromatic compounds, and the arrays provide comprehensive information such as gas concentration and composition.

    • Seong-Yong Jeong
    • , Young Kook Moon
    •  & Jong-Heun Lee

  • Article
    | Open Access

    Computational search for defect centers in semiconductors typically assumes that the defects realize the most thermodynamically stable configuration. Here the authors demonstrate, for a complex defect in silicon, that this is not always the case if the kinetics of defect formation is taken into account.

    • Peter Deák
    • , Péter Udvarhelyi
    •  & Adam Gali

  • 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

    The nature of the superconductivity in the kagome metals AV3Sb5 (A = K, Rb, Cs) remains under debate. Here, using muon spin spectroscopy, the authors find that the superconductivity in RbV3Sb5 and KV3Sb5 evolves from nodal to nodeless with increasing pressure and the superconducting state breaks time-reversal symmetry after suppression of the charge order.

    • Z. Guguchia
    • , C. Mielke III
    •  & R. Khasanov

  • Article
    | Open Access

    The nature of the excitations in the pseudogap regime and their relation to superconductivity remain core issues in cuprate high-Tc superconductivity. Here, using resonant inelastic x-ray scattering, the authors find that high-energy excitons in optimally-doped Bi2Sr2CaCu2O8+δ are enhanced by the onset of superconductivity, an effect possibly explained in terms of electron fractionalization.

    • A. Singh
    • , H. Y. Huang
    •  & D. J. Huang

  • Article
    | Open Access

    In 2001 superconductivity with a high critical temperature of 39 K was discovered in MgB2, but efforts since then to identify other diboride-family superconductors have been mostly unsuccessful. Here, the authors report the discovery of superconductivity in pressurized WB2, originating from the formation of metastable stacking faults and twin boundaries that exhibit a local structure resembling MgB2.

    • J. Lim
    • , A. C. Hire
    •  & G. R. Stewart

  • Article
    | Open Access

    How electron energy damp to lattice vibrations (phonons) in MXenes has not yet been unraveled. Here, the authors demonstrate an energy damping channel in which the Ti3C2Tx plasmonic electron energy transfers to coherent phonons by nonthermal electron mediation after Landau damping, without involving electron-electron scattering.

    • Qi Zhang
    • , Jiebo Li
    •  & Xueming Yang

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