Superconducting properties and materials articles within Nature Communications

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  • Article
    | Open Access

    The non-volatile switching of tunnel electroresistance in ferroelectric junctions provides the basis for memory and neuromorphic computing devices. Rouco et al. show tunnel electroresistance in superconductor-based junctions that arises from a redox rather than ferroelectric mechanism and is enhanced by superconductivity.

    • V. Rouco
    • , R. El Hage
    •  & Javier E. Villegas

  • Article
    | Open Access

    The pairing mechanism of cuprate superconductors is still under debate. Here, Valla et al. report that mass renormalization in Bi\(_{2}\)Sr\(_{2}\)CaCu\(_{2}\)O\(_{8+\delta }\) weakens with doping and disappears precisely where superconductivity disappears, eliminating phononic mechanism for pairing.

    • T. Valla
    • , I. K. Drozdov
    •  & G. D. Gu

  • Article
    | Open Access

    Experiments indicate an abrupt change in the pairing gap near the nematic transition in the FeSe1−xSx iron-based superconductor. Here, Setty et al. propose to explain them via a novel spin-1/2 paired state with topologically protected zero-energy excitations over a finite area nodal surface.

    • Chandan Setty
    • , Shinibali Bhattacharyya
    •  & P. J. Hirschfeld

  • Article
    | Open Access

    High throughput manufacturing of long length coated conductors requires fast epitaxial growth of high-temperature superconducting films. Here, Soler et al. report an ultrafast growth rates and high critical current densities of YBa2Cu3O7 films using a transient liquid-assisted growth method.

    • L. Soler
    • , J. Jareño
    •  & T. Puig

  • Article
    | Open Access

    The lately reported Higgs modes in unconventional superconductors require a classification and characterization allowed by nontrivial symmetry of the gap and the quench pulses. Here, the authors provide a classification scheme of Higgs oscillations with their excitation processes allowing them to distinguish between different symmetries of the superconducting condensate.

    • L. Schwarz
    • , B. Fauseweh
    •  & D. Manske

  • Article
    | Open Access

    The understanding of the vector order parameter for Cu0.3Bi2Se3 topological superconductor remains unclear. Here, Kawai et al. report a surprising disappearance of the in-plane upper critical field anisotropy for CuxBi2Se3 single crystals with more carriers, indicating a transition from nematic to chiral superconducting gap symmetry.

    • T. Kawai
    • , C. G. Wang
    •  & Guo-qing Zheng

  • Article
    | Open Access

    The anomalous Josephson effect can be regarded as the hall-mark effect of superconducting spintronics. Here, the authors report the observation of a tunable anomalous Josephson effect in InAs/Al Josephson junctions measured via a superconducting quantum interference device.

    • William Mayer
    • , Matthieu C. Dartiailh
    •  & Javad Shabani

  • Article
    | Open Access

    Solid evidence of quantum fluctuations associated to a quantum critical point in cuprate superconductors remains elusive. Here, Auvray et al. report Raman scattering evidence of enhanced electronic nematic fluctuations near the endpoint of the pseudogap phase in Bi\({}_{2}\)Sr\({}_{2}\)CaCu\({}_{2}\)O\({}_{8+\delta }\).

    • N. Auvray
    • , B. Loret
    •  & Y. Gallais

  • Article
    | Open Access

    The detailed structures of domain walls are important to determine macroscopic properties in charge density wave materials. Here, Park et al. report atomic and electronic structures of a honeycomb domain wall network in 1T-TaS2, which may help understand the enhanced superconductivity.

    • Jae Whan Park
    • , Gil Young Cho
    •  & Han Woong Yeom

  • Article
    | Open Access

    Josephson vortices (JVs) play an important role in superconducting quantum devices, but they remain difficult to be observed and manipulated. Here, Dremov et al. report magnetic fingerprint of JVs in magnetic force microscopy experiments, which paves a way to generate and control JVs.

    • Viacheslav V. Dremov
    • , Sergey Yu. Grebenchuk
    •  & Vasily S. Stolyarov

  • Article
    | Open Access

    Hybrid superconductor-semiconductor devices offer a promising platform for topological superconductivity. Here, Ke and Moehle et al. create ballistic Josephson junctions in InSb quantum wells and use magnetic and electric fields to control their free energy landscape.

    • Chung Ting Ke
    • , Christian M. Moehle
    •  & Srijit Goswami

  • Article
    | Open Access

    Evidence of quantum phase transitions is normally difficult to be detected. Here, Liu and Wang et al. report divergent critical exponent in ultrathin Pb films with superconducting fluctuations and spin-orbit interaction, indicating an anomalous quantum Griffiths singularity of superconductor-metal transition.

    • Yi Liu
    • , Ziqiao Wang
    •  & Jian Wang

  • Article
    | Open Access

    Currently, it is difficult to reach high momenta with narrow energy resolution via laser-based angle-resolved photoemission spectroscopy (ARPES). Here, Sie et al. develop a time-resolved XUV based ARPES setup which can access the first Brillouin zone of all materials with narrow energy resolution.

    • Edbert J. Sie
    • , Timm Rohwer
    •  & Nuh Gedik

  • Article
    | Open Access

    One of the proposed explanations for the unusual pseudogap behaviour of cuprate superconductors is the formation of an electron nematic phase. Murayama et al. find magnetic anisotropy in the pseudogap regime of HgBa2CuO4+δ, providing evidence for anomalous nematic ordering.

    • H. Murayama
    • , Y. Sato
    •  & Y. Matsuda

  • Article
    | Open Access

    To fully elucidate the relationship between density wave orders and superconductivity in high-Tc cuprates remains difficult. Here, the authors reveal two types of charge-density-wave orders and their intertwined relationship with spin-density-wave order and superconductivity in La2-xSrxCuO4.

    • J.-J. Wen
    • , H. Huang
    •  & J.-S. Lee

  • Article
    | Open Access

    The superconducting proximity effect on the surface state of a topological insulator is promising to generate topological superconductivity. Here, Yasuda et al. reported enhanced nonreciprocal charge transport in a Bi2Te3/FeTe heterostructure with an emerging superconducting order parameter.

    • Kenji Yasuda
    • , Hironori Yasuda
    •  & Yoshinori Tokura

  • Article
    | Open Access

    The understanding of how superconductivity emerges from a complex normal state remains elusive in unconventional superconductors. Here, Pelc et al. report exponential temperature dependence of the diamagnetic response in the normal state with a characteristic temperature scale, universally existing in three classes of oxide superconductors.

    • D. Pelc
    • , Z. Anderson
    •  & M. Greven

  • Article
    | Open Access

    It is predicted that Majorana zero modes can appear locally around topological defects in a two-dimensional system. Here, the authors observe pairs of zero modes stabilized in the middle and around the magnetic domains in a disordered superconducting Pb monolayer.

    • Gerbold C. Ménard
    • , Andrej Mesaros
    •  & Tristan Cren

  • Article
    | Open Access

    The discovery of over 200 K superconductivity excites the community to search for room temperature superconductivity. Here, Mozaffari et al. report the temperature dependence of the upper critical fields of superconducting H3S under a record-high combination of pressures up to 160 GPa and magnetic fields up to 65 T.

    • Shirin Mozaffari
    • , Dan Sun
    •  & Fedor F. Balakirev

  • Article
    | Open Access

    Precise measurements of the superconducting stiffness tensor can give detailed insights into the superconductor-normal phase transition. Kapon et al. introduce the Stiffnessometer approach for sensitive magnetic-field-free measurements and find two transition temperatures in LSCO rings.

    • Itzik Kapon
    • , Zaher Salman
    •  & Amit Keren

  • Article
    | Open Access

    Surface superconductivity in a Dirac semimetal remains rarely studied. Here, Huang and Zhou et al. report the evidence of proximity-induced surface superconductivity in a superconductor/Dirac semimetal hybrid system Nb/Cd3As2.

    • Ce Huang
    • , Benjamin T. Zhou
    •  & Faxian Xiu

  • Article
    | Open Access

    A quantized zero-bias conductance peak (ZBCP) is potentially a signature of Majorana edge mode provided that a topological gap opens in the bulk. Here, Grivnin et al. observe ZBCP at the edge both with and without a superconducting bulk-gap in an InAs nanowire coated with epitaxial Al.

    • Anna Grivnin
    • , Ella Bor
    •  & Hadas Shtrikman

  • Article
    | Open Access

    Several experiments have shown evidence for unusual nematic electronic behaviour in unconventional superconductors. Here the authors use pump-probe spectroscopy to observe out-of-equilibrium behaviour of coupled nematic-orbital excitations in iron selenide.

    • T. Shimojima
    • , Y. Suzuki
    •  & K. Ishizaka

  • Article
    | Open Access

    The superconducting gap structure contains important information to understand the pairing mechanism of unconventional superconductivity. Here, by using a newly established phase-referenced quasiparticle interference technique, the authors visualize the sign change of the d-wave superconducting gap directly in Bi2Sr2CaCu2O8+δ.

    • Qiangqiang Gu
    • , Siyuan Wan
    •  & Hai-Hu Wen

  • Article
    | Open Access

    The understanding of charge density wave (CDW) correlations in cuprate superconductors remains hampered due to the lack of scattering phase information. Here, Chen et al. discover a reproducible CDW domain memory effect upon repeated cycling to temperatures well above the CDW ordering temperature.

    • X. M. Chen
    • , C. Mazzoli
    •  & I. K. Robinson

  • Article
    | Open Access

    Exotic electronic order may emerge and intertwine with superconductivity in iron-based superconductors. Here, the authors observe asymmetric electronic and superconducting gap structure in heavily hole-doped RbFe2As2 along the (π, π) and (π, -π) directions in reciprocal space, suggesting a novel (π, π) nematic phase emerging.

    • Xi Liu
    • , Ran Tao
    •  & Donglai Feng

  • Article
    | Open Access

    The optimal condition for superconductivity is a long-sought issue but remains challenging. Here, Ivashko et al. demonstrate that the compressive strain to La2CuO4 films enhances the Coulomb and magnetic-exchange interactions relevant for superconductivity, providing a strategy to optimise the parent Mott state for superconductivity.

    • O. Ivashko
    • , M. Horio
    •  & J. Chang

  • Article
    | Open Access

    In an effort to optimize the performance of two-dimensional materials for thermoelectric generation, compounds with advantageous intrinsic properties must be identified. Here, the authors report large thermoelectric effect in ultrathin FeSe thin films with high Tc superconductivity.

    • Sunao Shimizu
    • , Junichi Shiogai
    •  & Yoshihiro Iwasa

  • Article
    | Open Access

    The mechanism of enhanced superconducting transition temperature (Tc) at the FeSe/SrTiO3 interface remains enigmatic. Here, Song and Yu et al. reveal the evidence of cooperation between intrinsic pairing interaction in FeSe and interfacial electron–phonon coupling to enhance the Tc at the FeSe/SrTiO3 interface.

    • Q. Song
    • , T. L. Yu
    •  & D. L. Feng

  • Article
    | Open Access

    Among its interesting properties, SrTiO3 can show both superconductivity and ferroelectric quantum criticality at low temperatures. Tomioka et al. use La and oxygen-isotope doping to tune electron-doped SrTiO3 to the critical region and observe enhanced superconductivity, suggesting a link between them.

    • Yasuhide Tomioka
    • , Naoki Shirakawa
    •  & Isao H. Inoue

  • Article
    | Open Access

    The effects of dopants in high-temperature superconductors on the surrounding electronic structure give insights into their unconventional microscopic behaviour. Here the authors find a new class of defects that they identify as oxygen dopants whose ionization and local environment induce unusual atomic-scale charge dynamics.

    • F. Massee
    • , Y. K. Huang
    •  & M. Aprili

  • Article
    | Open Access

    The interplay of induced superconductivity and magnetic fields should drive InAs nanowires into a topological superconducting phase. Laroche et al. use the microwave radiation emitted by an InAs nanowire Josephson junction to observe the 4π-periodic Josephson effect, a hallmark of the topological phase.

    • Dominique Laroche
    • , Daniël Bouman
    •  & Attila Geresdi

  • Article
    | Open Access

    An anomalous phase shift in a topological insulator based Josephson junction is expected but never been observed. Here, Assouline et al. observe an anomalous phase shift in a Bi2Se3 based Josephson junction in presence of an in-plane magnetic field, opening opportunities for phase-controlled Josephson devices.

    • Alexandre Assouline
    • , Cheryl Feuillet-Palma
    •  & Hervé Aubin

  • Article
    | Open Access

    Spectroscopic evidence of equal-spin triplet Cooper pairs is still missing so far. Here, Diesch et al. propose a unique signature for the presence of equal-spin triplet pairs and experimentally reveal the spin configuration of triplet pairs at the Al/EuS interface.

    • S. Diesch
    • , P. Machon
    •  & E. Scheer

  • Article
    | Open Access

    The doping level of cuprate superconductors is usually difficult to determine. Here, Drozdov et al. report spectroscopic studies of in-situ modified Bi2Sr2CaCu2O8+δ, exploring not only the superconducting dome but also the previously inaccessible, non-superconducting regime of the phase diagram, with absolute determination of the doping level.

    • I. K. Drozdov
    • , I. Pletikosić
    •  & T. Valla

  • Article
    | Open Access

    Devices that generate electricity from electric fluctuations are promising for wireless power transmission as well as energy harvesting from environmental radio waves. Here the authors report the electric power generation from environmental fluctuations by using superconducting vortex strings in MoGe/YIG bilayer system.

    • J. Lustikova
    • , Y. Shiomi
    •  & E. Saitoh

  • Article
    | Open Access

    Emission of electromagnetic waves is expected when superconducting vortices cross sample edges, but such a radiation has not been observed so far. Here, Dobrovolskiy et al. evidence the electromagnetic radiation from vortices crossing the layers of a Mo/Si superlattice, where the emission spectra can be tuned by dc bias current and coarsely by the in-plane magnetic field.

    • O. V. Dobrovolskiy
    • , V. M. Bevz
    •  & M. Huth

  • Article
    | Open Access

    Understanding the ground state (GS) phase transitions in the quantum tunneling regime of a superconducting system is important for future qubit devices. Here, Shen, Heedt and Borsoi et al. report distinct types of fermion parity GS transitions as a function of magnetic field and gate voltages in a Coulomb-blockaded InSb–Al island.

    • Jie Shen
    • , Sebastian Heedt
    •  & Leo P. Kouwenhoven

  • Article
    | Open Access

    Whether the quantum Griffiths singularity state exists in one-dimensional (1D) systems remains elusive. Here, Zhang et al. report violation of the Pauli limit in the superconducting critical field and multiple phase transitions in the current-voltage hysteresis loops in a Ta2PdS5 nanowire, suggesting signatures of quasi-1D quantum Griffith singularity.

    • Enze Zhang
    • , Jinhua Zhi
    •  & Faxian Xiu

  • Article
    | Open Access

    A transmon qubit insensitive to magnetic fields is a crucial element in topological quantum computing. Here, Kroll et al. create graphene transmons by integrating monolayer graphene Josephson junctions into microwave frequency superconducting circuits, allowing them to operate in a parallel magnetic field of 1 T.

    • J. G. Kroll
    • , W. Uilhoorn
    •  & L. P. Kouwenhoven

  • Article
    | Open Access

    The emergence of superconductivity from the normal state in the cuprates above the transition temperature (Tc) has been controversial. Here, Pelc et al. report nonlinear conductivity, resulting from superconducting precursors only, vanishing exponentially above Tc both with temperature and with magnetic field.

    • Damjan Pelc
    • , Marija Vučković
    •  & Neven Barišić

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