Electronic properties and materials articles within Nature Communications

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  • Article
    | Open Access

    The nature of unconventional charge density wave in kagome metals is currently under intense debate. Here the authors report the coexistence of the 2 × 2 × 1 charge density wave in the kagome sublattice and the Sb 5p-electron assisted 2 × 2 × 2 charge density waves in CsV3Sb5.

    • Haoxiang Li
    • , G. Fabbris
    •  & H. Miao

  • Article
    | Open Access

    In one-dimensional systems, electronic interactions lead to a breakdown of Fermi liquid theory and the formation of a Tomonaga Luttinger Liquid (TLL), as recently reported in the helical edge states of quantum spin Hall insulators. Here, the authors show that the many-body interactions in the helical TLL of 1T’- WTe2 can be effectively controlled by the dielectric screening via the substrate.

    • Junxiang Jia
    • , Elizabeth Marcellina
    •  & Bent Weber

  • Article
    | Open Access

    External perturbations can induce 3D charge order in cuprates, but the 3D correlation length is limited and the mechanism is not well understood. Ruiz et al. show that Pr substitution in YBa2Cu3O7 enhances interplanar orbital coupling and stabilizes coherent 3D charge order that coexists with superconductivity.

    • Alejandro Ruiz
    • , Brandon Gunn
    •  & Alex Frano

  • Article
    | Open Access

    Here, the authors investigate the interactions between Fermi polarons in monolayer WS2 by multi-dimensional coherent spectroscopy, and find that, at low electron doping densities, the dominant interactions are between polaron states that are dressed by the same Fermi sea. They also observe a bipolaron bound state with large binding energy, involving excitons in different valleys cooperatively bound to the same electron.

    • Jack B. Muir
    • , Jesper Levinsen
    •  & Jeffrey A. Davis

  • Article
    | Open Access

    The fate of high-energy degrees of freedom, such as spin-orbit interactions, in the coherent state of Kondo lattice materials remains unclear. Here, the authors use resonant inelastic x-ray scattering in CePd3 to show how Kondo-quasiparticle excitations are renormalized and develop a pronounced momentum dependence, while maintaining a largely unchanged spin-orbit gap.

    • M. C. Rahn
    • , K. Kummer
    •  & M. Janoschek

  • Article
    | Open Access

    The potential energy efficiency of impact ionization field-effect transistors (I2FETs) is usually limited by stringent operational conditions. Here, the authors report I2FETs based on 2D WSe2, showing average subthreshold slopes down to 2.3 mV/dec and on/off ratios of ~106 at room temperature and bias voltages <1 V.

    • Haeju Choi
    • , Jinshu Li
    •  & Sungjoo Lee

  • Article
    | Open Access

    Determining the triboelectric charge and energy density of dielectric materials is generally limited by many factors, failing to reflect their intrinsic behaviour. Here, a standardized strategy is proposed employing contact-separation TENG and supressing air-breakdown to assess max triboelectric charge and energy densities leading to an updated triboelectric series.

    • Di Liu
    • , Linglin Zhou
    •  & Zhong Lin Wang

  • Article
    | Open Access

    Trilayer graphene was recently shown to exhibit superconductivity without a Moire pattern that had proved important in tuning superconductivity in bilayer graphene. Here, the authors explore correlated metallic phases and the pairing mechanism of superconductivity in trilayer graphene, and show that intervalley coherent fluctuations can act as a pairing glue, giving rise to chiral unconventional superconductivity.

    • Shubhayu Chatterjee
    • , Taige Wang
    •  & Michael P. Zaletel

  • Article
    | Open Access

    The Fermi-Hubbard model represents one of the benchmarks for testing quantum computational methods for condensed matter. Here, the authors are able to reproduce qualitative properties of the model on 1 × 8 and 2 × 4 lattices, by running a VQE-based algorithm on a superconducting quantum processor.

    • Stasja Stanisic
    • , Jan Lukas Bosse
    •  & Ashley Montanaro

  • Article
    | Open Access

    Experimentally probing the orbital population is highly desirable to resolve the redox mechanism of cathodes materials. Here the authors quantify the orbital populations of Co and O in LiCoO2 and identify the ligand-to-metal charge transfer.

    • Tongtong Shang
    • , Dongdong Xiao
    •  & Jing Zhu

  • Article
    | Open Access

    Many topological crystalline phases have unknown physical responses. Here, the authors systematically extend the theory of defect and flux responses to predict zero-dimensional (0D) states in topological crystalline materials, including 2D PbTe monolayers and 3D SnTe.

    • Frank Schindler
    • , Stepan S. Tsirkin
    •  & Benjamin J. Wieder

  • Article
    | Open Access

    Manipulation of topology of the electronic structure is highly desirable for practical applications of topological materials. Here the authors demonstrate tuning and annihilation of Weyl nodes in momentum space by means of the Zeeman effect in a strongly correlated topological semimetal Ce3Bi4Pd3.

    • Sami Dzsaber
    • , Diego A. Zocco
    •  & Silke Paschen

  • Article
    | Open Access

    Ambipolar organic electrochemical transistors simplify bioelectronics circuitry but are challenging due to complicated material design and synthesis. Here, the authors demonstrate that p- and n-type blends offer a simple and tuneable approach for the fabrication of ambipolar devices and circuits.

    • Eyal Stein
    • , Oded Nahor
    •  & Gitti L. Frey

  • Article
    | Open Access

    Quantum Hall edge channels provide a platform to study electron interference, however understanding decoherence in these systems remains an open problem. Jo et al. realize a regime of suppressed decoherence in an electronic Mach-Zehnder interferometer formed in a graphene quantum Hall pn junction.

    • M. Jo
    • , June-Young M. Lee
    •  & P. Roulleau

  • Article
    | Open Access

    2D transition metal ditellurides exhibit nontrivial topological phases, but the controlled bottom-up synthesis of these materials is still challenging. Here, the authors report the layer-by-layer growth of large-area bilayer and trilayer 1T’ MoTe2 films, showing thickness-dependent ferroelectricity and nonlinear Hall effect.

    • Teng Ma
    • , Hao Chen
    •  & Kian Ping Loh

  • Article
    | Open Access

    Superconductivity at megabar pressures has recently attracted interest in the context of hydrides. Here, the authors demonstrate superconductivity up to 26 K at high pressure in elemental titanium, and further suggest that electron correlations contribute to the high Tc.

    • Changling Zhang
    • , Xin He
    •  & Changqing Jin

  • Article
    | Open Access

    Spin qubits are a platform for quantum computing. There are many advantages for quantum information processing if the spin qubit can move. Here, Helgers et al. use a surface acoustic wave to define a moving quantum dot and demonstrate the magneticfield-free control of the spin precession, bringing “flying” spin qubits a step closer.

    • Paul L. J. Helgers
    • , James A. H. Stotz
    •  & Paulo V. Santos

  • Article
    | Open Access

    It has been predicted that elemental Iron, with low dimensionality, will be a topological metal hosting Weyl nodes. Here, Chen et al. grow iron on tungsten, a heavy metal with a strong spin-orbit interaction, and using momentum microscopy, show the emergence of giant open Fermi arcs which can be shaped by varying the magnetization of the iron.

    • Ying-Jiun Chen
    • , Jan-Philipp Hanke
    •  & Christian Tusche

  • Article
    | Open Access

    Electron transfer has been shown to contribute to contact electrification at liquid–solid interface. Here, authors investigate the magnetic field effect on the liquid–solid electron transfer and propose a spin conversion model for the liquid–solid contact electrification.

    • Shiquan Lin
    • , Laipan Zhu
    •  & Zhong Lin Wang

  • Article
    | Open Access

    Existing approaches to modulating the properties of 2D materials typically involve heterostructuring or exposure to external fields. Here, the authors propose a gate-free non-contact approach to tuning the properties of a 2D semiconductor via the image interaction due to proximity to a neutral patterned structure.

    • Valerio Di Giulio
    • , P. A. D. Gonçalves
    •  & F. Javier García de Abajo

  • Article
    | Open Access

    Studies of twisted bilayer transition metal dichalcogenides have so far focused only on those containing group-VI metals. Here, the authors predict that twisted bilayers of ZrS2, with the group-IV metal Zr, form an emergent moiré Kagome lattice with a uniquely strong spin-orbit coupling, leading to quantum-anomalous-Hall and fractional-Chern-insulating states.

    • Martin Claassen
    • , Lede Xian
    •  & Angel Rubio

  • Article
    | Open Access

    Strain engineering is effective to improve the carrier mobility of semiconductor materials. Here, the authors demonstrate lattice strain-induced mobility enhancement of an azobenzene compound under photoisomerization and its application in large-scale flexible organic field-effect transistors.

    • Mingliang Li
    • , Jing Zheng
    •  & Jinyao Tang

  • Article
    | Open Access

    Twisted heterostructures of transition metal dichalcogenides host the so-called moiré excitons, or intralayer excitons modified by the moiré potential. Here the authors show tunability of the moiré excitons and the coexisting correlated electronic states in WSe2/WS2 superlattices with varying WSe2 layer thickness

    • Dongxue Chen
    • , Zhen Lian
    •  & Su-Fei Shi

  • Article
    | Open Access

    Dispersionless plasmons could find important practical applications, but previous demonstrations have been limited to 2D materials and small momentum range. Here the authors report ultra-flat plasmons propagating over a wide range of momenta in a 3D strongly correlated oxide α-Ti2O3.

    • Han Gao
    • , Chao Ding
    •  & Yangyang Li

  • Article
    | Open Access

    Long-range magnetic order of quasiparticle doped holes is important for understanding the physics of cuprate superconductors, albeit difficult to probe in experiments. Ong et al. observe ferromagnetism of quasiparticle doped holes in a cuprate heterostructure and discuss implications for cuprates in the ground state.

    • B. L. Ong
    • , K. Jayaraman
    •  & A. Rusydi

  • Article
    | Open Access

    In graphene and on the surfaces of many topological insulators, the Dirac cones are pinned to high symmetry points in reciprocal space. Here, the authors report that the Dirac cones in atomically-thin Sb layers occur at generic reciprocal-space points which can be tuned by lattice strain.

    • Qiangsheng Lu
    • , Jacob Cook
    •  & Guang Bian

  • Article
    | Open Access

    The thermal Hall effect, or a temperature gradient transverse to a heat current and a magnetic field, has been observed in many materials, but its mechanism is not fully understood. Uehara et al. demonstrate the dominant phonon contribution to both longitudinal and transverse thermal response in a metallic spin ice Pr2Ir2O7.

    • Taiki Uehara
    • , Takumi Ohtsuki
    •  & Yo Machida

  • Article
    | Open Access

    In the superconductor Sr2RuO4, in-plane strain is known to enhance both the superconducting transition temperature Tc and upper critical field Hc2, but the effect of out-of-plane strain has not been studied. Here, the authors find that Hc2 is enhanced under out-of-plane strain, but Tc unexpectedly decreases.

    • Fabian Jerzembeck
    • , Henrik S. Røising
    •  & Clifford W. Hicks

  • Article
    | Open Access

    Electronic nematicity is typically associated with the breaking of rotational symmetry. Here the authors report unusual nematicity in BaNi2As2, manifested in a large splitting of the optical phonon mode above the structural transition temperature, and link it to the coupling between the lattice and nematic fluctuations.

    • Yi Yao
    • , Roland Willa
    •  & Matthieu Le Tacon

  • Article
    | Open Access

    Microscopic origins of thermopower are investigated to design efficient thermoelectric devices. Here, the authors report thermopower and phonon puddles in the charge density wave states in 1T-TaS2 by scanning thermoelectric microscopy.

    • Dohyun Kim
    • , Eui-Cheol Shin
    •  & Heejun Yang

  • Article
    | Open Access

    Defect-free surfaces with excess charge are typically described as a homogeneous 2D electron gas. Here, in contrast, the authors find that the KTaO3(001) surface hosts a charge density wave coexisting with a pattern of electron polarons, highly localized states of excess electrons bound to a lattice distortion.

    • Michele Reticcioli
    • , Zhichang Wang
    •  & Cesare Franchini

  • Article
    | Open Access

    While emission and stability of metal–halide perovskites can be enhanced through heterostructural encapsulation, a controlled synthesis route to such structures is not trivial to realize. Here, the authors design a mechanochemistry-driven protocol for synthesizing highly luminescent CsPbBr3/Cs4PbBr6 heterostructures.

    • Kyeong-Yoon Baek
    • , Woocheol Lee
    •  & Takhee Lee

  • Article
    | Open Access

    Twisted van der Waals structures represent a versatile platform to investigate topological and correlated electronic states. Here, the authors report the visualization of an electron crystal phase in twisted monolayer-bilayer graphene via scanning tunnelling microscopy, studying the coupling between strong electron correlation and nontrivial band topology.

    • Si-yu Li
    • , Zhengwen Wang
    •  & Jinhai Mao

  • Article
    | Open Access

    Materials with time reversal and inversion symmetry have a bulk band structure that is spin degenerate, however, they can still exhibit a hidden spin-polarization when probed in a specific way. Here, using angle and spin resolved photoemission, Clark et al reveal a hidden spin-polarization in 1T-HfSe2 that persists through the time reversal invariant momenta due to effective spin-orbital magnetisations

    • Oliver J. Clark
    • , Oliver Dowinton
    •  & Jaime Sánchez-Barriga

  • Article
    | Open Access

    The Fermi surface is related to the energy distribution of electrons in a solid, and governs physical properties of metals and semiconductors. A new type of angle-resolved photoemission spectroscopy, probing the Fermi surface and combining short recording time with high resolution, is now presented.

    • Sergey Borisenko
    • , Alexander Fedorov
    •  & Bernd Büchner

  • Article
    | Open Access

    Magnetic effects can emerge due to structural variations when the size of materials is reduced towards the nanoscale. Here, Chakrabarti et al demonstrates the opposite effect, showing that the interatomic distance in atomic wires changes by up to 20% depending on the orientation of an applied magnetic field.

    • Sudipto Chakrabarti
    • , Ayelet Vilan
    •  & Oren Tal

  • Article
    | Open Access

    Planar growth of nanowire arrays involves interactions between materials that affect the electronic behavior of the effective heterojunction. Here, authors show how core curvature and cross-section morphology affect shell growth, demonstrating how strain at the core-shell interface induces electronic band modulations in ZnSe@ZnTe nanowires.

    • Sara Martí-Sánchez
    • , Marc Botifoll
    •  & Jordi Arbiol

  • Article
    | Open Access

    The deployment of lithium metal batteries is forestalled by poor control over the deposition morphology of lithium. Here, the authors discover that high electrical resistance can be leveraged for controlling lithium morphology and enabling high-performing lithium metal batteries.

    • Solomon T. Oyakhire
    • , Wenbo Zhang
    •  & Stacey F. Bent

  • Article
    | Open Access

    Maximizing the electromechanical response is crucial for developing piezoelectric devices. Here, the authors demonstrate a giant electric-field-induced strain and its origin in alkali niobate epitaxial thin films with self-assembled planar faults.

    • Moaz Waqar
    • , Haijun Wu
    •  & John Wang

  • Article
    | Open Access

    Light emission from 17 types of LEDs is observed at record-low voltages of 36–60% of the bandgaps, which cannot be explained by earlier theories. The electroluminescence-voltage curves reveal a unified mechanism for ultralow-voltage LED operation.

    • Yaxiao Lian
    • , Dongchen Lan
    •  & Dawei Di

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