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Articles by Yoichi Ando
Tunneling spectroscopy of topological insulator Josephson junctions
Reference #1 Abstract INTRODUCTION RESULTS DISCUSSION MATERIALS AND METHODS Acknowledgments Supplementary Materials REFERENCES eLetters (0) Information & Authors Metrics & Citations View Options References Figures Tables Media Share This article has 0 eLetter . Abstract In the seminal proposal by Fu and Kane, the superconducting proximity effect is used to realize topological superconductivity in the topological surface state (TSS) of a 3D topological insulator (TI).
Publisher Correction: Reply to: Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctions
Correction to: Nature Physics https://doi.org/10.1038/s41567-026-03376-3, published online 28 July 2026. In the version of the article initially published, in the second paragraph, the text “…similar in magnitude to the ECT contribution \({T}_{12}^{{ee}}\), such that \({T}_{12}^{{ee}}\)” should have read “…similar in magnitude to the ECT contribution \({T}_{12}^{{ee}}\), such that \({T}_{12}^{{he}}\approx {T}_{12}^{{ee}}\)”.
Reply to: Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctions
replying to E. S. Tikhonov & V. S. Khrapai Nature Physics https://doi.org/10.1038/s41567-026-03377-2 (2026) In our recent article1, we reported the presence of a long-range crossed Andreev reflection (CAR) contribution to the non-local conductance in a proximitized topological insulator nanowire. Our work also highlighted the intricate interplay of CAR and elastic co-tunnelling (ECT) transmission in mesoscopic superconducting systems. In particular, the conclusion of ref.
Generic chiral anomaly and planar Hall effect in a non-Weyl system
Abstract The condensed-matter version of the chiral anomaly describes how electrons are pumped from a Weyl node with negative chirality to a Weyl node with positive chirality using parallel electric and magnetic fields. Key experimental signatures are a negative longitudinal magnetoresistance and the planar Hall effect, both of which have been experimentally observed.
Publisher Correction: Observation of Josephson harmonics in tunnel junctions - Nature Physics
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Correction to: Nature Physics https://doi.org/10.1038/s41567-024-02400-8, published online 14 February 2024. In the version of the article initially published, references 87 and 88 were mistakenly swapped. They have now been corrected so that reference 87 is “Willsch, D. & Rieger, D. Spectroscopy data and model parameters for ‘Observation of Josephson harmonics in tunnel junctions’.
By Dennis Willsch, Dennis Rieger, Patrick Winkel, Madita Willsch, Christian Dickel, Jonas Krause, Yoichi Ando, Nicholas T. Bronn, Zlatko K. Minev, Simon Günzler, Patrick Paluch, Thomas Reisinger, Roudy Hanna, Peter Schüffelgen, Detlev Grützmacher, Luiza Buimaga-Iarinca, Wolfgang Wernsdorfer, David DiVincenzo, Kristel Michielsen, Gianluigi Catelani
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Nature
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Observation of Josephson harmonics in tunnel junctions - Nature Physics
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Abstract Approaches to developing large-scale superconducting quantum processors must cope with the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices. State-of-the-art superconducting qubits employ aluminium oxide (AlOx) tunnel Josephson junctions as the sources of nonlinearity necessary to perform quantum operations. Analyses of these junctions typically assume an idealized, purely sinusoidal current–phase relation.
By Dennis Willsch, Dennis Rieger, Patrick Winkel, Madita Willsch, Christian Dickel, Jonas Krause, Yoichi Ando, Nicholas T. Bronn, Zlatko K. Minev, Simon Günzler, Patrick Paluch, Thomas Reisinger, Roudy Hanna, Peter Schüffelgen, Detlev Grützmacher, Luiza Buimaga-Iarinca, Wolfgang Wernsdorfer, David DiVincenzo, Kristel Michielsen, Gianluigi Catelani
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Nature
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Antiferromagnetic topological insulator with selectively gapped Dirac cones - Nature Communications
Abstract Antiferromagnetic (AF) topological materials offer a fertile ground to explore a variety of quantum phenomena such as axion magnetoelectric dynamics and chiral Majorana fermions. To realize such intriguing states, it is essential to establish a direct link between electronic states and topology in the AF phase, whereas this has been challenging because of the lack of a suitable materials platform.
Atomic Diffusion-Induced Polarization and Superconductivity in Topological Insulator-Based Heterostructures
Download Hi-Res ImageDownload to MS-PowerPointCite This:ACS Nano 2023, XXXX, XXX RETURN TO ARTICLES ASAPPREVArticleNEXT * , , * Philipp Rüßmann Institute for Theoretical Physics and Astrophysics, University of Würzburg, 97074 Würzburg, Germany Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich GmbH and JARA, 52425 Jülich, Germany *Email: p.ruessmann@fz-juelich.de , , Detlev Grützmacher Peter Grünberg Institute and JARA-FIT, Forschungszentrum Jülich GmbH,...
Giant magnetochiral anisotropy from quantum-confined surface states of topological insulator nanowires - Nature Nanotechnology
Abstract Wireless technology relies on the conversion of alternating electromagnetic fields into direct currents, a process known as rectification. Although rectifiers are normally based on semiconductor diodes, quantum mechanical non-reciprocal transport effects that enable a highly controllable rectification were recently discovered1,2,3,4,5,6,7,8,9.
Observability of superconductivity in Sr-doped ${\mathrm{Bi}}_{2}{\mathrm{Se}}_{3}$ at the surface using scanning tunneling microscope
Abstract The superconducting materials family of doped Bi2Se3 remains intensively studied in the field of condensed matter physics due to strong experimental evidence for topologically nontrivial superconductivity in the bulk. However, at the surface of these materials, even the observation of superconductivity itself is still controversial.
Uniaxial-strain control of nematic superconductivity in SrxBi2Se3
Abstract Nematic states are characterized by rotational symmetry breaking without translational ordering. Recently, nematic superconductivity, in which the superconducting gap spontaneously lifts the rotational symmetry of the lattice, has been discovered. In nematic superconductivity, multiple superconducting domains with different nematic orientations can exist, and these domains can be controlled by a conjugate external stimulus.
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