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Article
Physics, Applied
N. Satchell et al.
Summary: We demonstrate the nonreciprocal critical current in Nb thin films and explain the supercurrent diode effect in the tracks. The diode effect varies with temperature and magnetic field, and depends on the width of the Nb tracks. The supercurrent diode is proposed to become a ubiquitous component of the superconducting computer.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
John Chiles et al.
Summary: This article introduces a device using superconducting diodes as non-reciprocal circuit elements, which enables non-dissipative transport in one direction and resistive transport in the opposite direction. The device consists of three graphene Josephson junctions connected by a common superconducting island, referred to as a Josephson triode. By breaking the time-reversal symmetry with a control current, the device achieves efficiencies approaching 100% without the need for a magnetic field. The utility of the triode is demonstrated by rectifying a small amplitude square wave, indicating its potential application in modern quantum circuits.
Article
Multidisciplinary Sciences
Ananthesh Sundaresh et al.
Summary: The authors study non-reciprocal critical current in Al/InAs nanowires and propose a generic extrinsic mechanism involving field-generated diamagnetic currents, which may explain the earlier Nb/V/Ta results.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Condensed Matter
C. Baumgartner et al.
Summary: The simultaneous breaking of inversion- and time-reversal symmetry in Josephson junction (JJ) leads to anomalous Josephson effect and magnetochiral anisotropy (MCA) of Josephson inductance. The orientation of the current with respect to the lattice affects the MCA, possibly due to a finite Dresselhaus component, and the two-fold symmetry of the Josephson inductance reflects in the activation energy for phase slips.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Nanoscience & Nanotechnology
Christian Baumgartner et al.
Summary: This study introduces the design and application of non-reciprocal superconducting devices. By fabricating and measuring Josephson junctions, researchers have successfully achieved rectification of supercurrent and proposed a semi-quantitative model to explain the experimental data.
NATURE NANOTECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Akito Daido et al.
Summary: Based on recent experiments, this study proposes an intrinsic mechanism for the superconducting diode effect and investigates the relationship between the asymmetry of the depairing current and temperature/magnetic field, revealing the rich phase diagram and functionalities of noncentrosymmetric superconductors.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Heng Wu et al.
Summary: The Josephson diode, which serves as the superconducting analogue to the semiconducting diode, has been realized in a van der Waals heterostructure, showing unique properties such as magnetic-field-free superconductivity and different behaviors under positive and negative currents.
Article
Physics, Multidisciplinary
James Jun He et al.
Summary: Nonreciprocal responses in noncentrosymmetric systems are an important fundamental issue, especially non-dissipative and coherent nonreciprocal transport. Recent research on superconductor diodes has advanced this field significantly. This study provides theoretical descriptions and design principles of superconductor diodes, including analytical relations between nonreciprocal critical currents and system parameters in Rashba spin-orbit coupled systems, as well as numerical calculations.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Multidisciplinary
S. Ilic et al.
Summary: In this study, we calculate the nonreciprocal critical current and quantify the supercurrent diode effect in twodimensional Rashba superconductors with arbitrary disorder, using the quasiclassical Eilenberger equation. The results show that even in the presence of strong disorder, the effect persists, and the sign of the diode effect changes as magnetic field and disorder are increased.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Noah F. Q. Yuan et al.
Summary: When both inversion and time-reversal symmetries are broken, the critical current of a superconductor can be nonreciprocal. In this work, it is shown that in certain classes of two-dimensional superconductors with antisymmetric spin-orbit coupling, Cooper pairs acquire a finite momentum upon the application of an in-plane magnetic field, resulting in unequal critical currents in the direction parallel and antiparallel to the Cooper pair momentum. This supercurrent diode effect is also observed in the polarity dependence of in-plane critical fields induced by a supercurrent. These nonreciprocal effects can be found in polar SrTiO3 film, few-layer MoTe2 in the Td phase, and twisted bilayer graphene where the valley degree of freedom plays a role analogous to spin.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Multidisciplinary
Harley D. Scammell et al.
Summary: In this study, the superconducting phase in a heterostructure of mirror-symmetric twisted trilayer graphene and WSe2 was found to exhibit a zero-field superconducting diode effect, which has been investigated and explained with a microscopic theory. The findings not only contribute to the understanding of the physics of trilayer graphene on WSe2, but also provide guidance for future experiments in spin-orbit-coupled graphene moire systems.
Article
Physics, Multidisciplinary
Jiang-Xiazi Lin et al.
Summary: A superconducting diode effect is observed in twisted trilayer graphene at zero magnetic field, indicating the coexistence of superconductivity and time-reversal symmetry breaking. This non-reciprocal behavior can be controlled by adjusting carrier density, twist angle, or applying a magnetic field.
Article
Multidisciplinary Sciences
Lorenz Bauriedl et al.
Summary: The supercurrent diode effect has been observed in NbSe2 crystals, where it is proportional to the out-of-plane magnetic field. This effect can be utilized for designing highly integrable superconducting quantum electronic devices.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Margarita Davydova et al.
Summary: We propose a universal mechanism for the Josephson diode effect in short Josephson junctions, which arises from finite Cooper pair momentum and simultaneous breaking of inversion and time-reversal symmetries. The diode efficiency is up to 40% with an asymmetry between the critical currents in opposite directions of approximately 230%. The mechanism is explained by the Doppler shift of the Andreev bound state energies and the phase-independent asymmetric current from the continuum. We also introduce a simple scheme for achieving finite-momentum pairing without relying on spin-orbit coupling, expanding the platforms for observing supercurrent diode effects.
Article
Physics, Multidisciplinary
Yi Zhang et al.
Summary: Motivated by recent progress in the superconductivity nonreciprocal phenomena, this study investigates the general theory of Josephson diodes, focusing on the asymmetric proximity process inside the tunneling barrier. From the perspective of symmetry breaking, there are two types of Josephson diodes: inversion breaking and time-reversal breaking. Voltage bias can effectively tune the proximity process in the inversion breaking case, while current flow can adjust the internal time-reversal breaking field in the time-reversal breaking case. These findings provide a comprehensive understanding and general principles for realizing Josephson diodes, including the recently discovered NbSe2/Nb3Br8/NbSe2 Josephson diodes.
Article
Materials Science, Multidisciplinary
Akito Daido et al.
Summary: Nonreciprocity in superconductors, specifically the superconducting diode effect (SDE), is studied in this paper. The relationship between SDE and nonreciprocity of the transition lines under supercurrent is elucidated using a generalized theory and a microscopic model. It is found that the sign reversal of SDE accompanies the crossover of helical superconductivity, which is a general feature independent of system details. Electric current is established as a control parameter and a powerful probe to study the superconducting properties related to finite-momentum Cooper pairs.
Article
Materials Science, Multidisciplinary
T. H. Kokkeler et al.
Summary: We study the transport properties of a diffusive Josephson junction between superconductors and ferromagnetic insulators on a three-dimensional topological insulator. We analyze the Usadel equation and find the appearance of an anomalous phase in the absence of an external magnetic field. We also explore nonreciprocal electronic transport and calculate the diode efficiency of the junction, showing a significant effect even without an applied magnetic field and a nonmonotonic behavior with temperature.
Article
Materials Science, Multidisciplinary
Jaglul Hasan et al.
Summary: In this study, we investigate the anomalous response of a Josephson junction in two-dimensional electron systems with broken inversion and time-reversal symmetries. By utilizing both the Ginzburg-Landau formalism and the microscopic Green's functions approach, we analyze this phenomenon and calculate the magnitude of the critical current as well as the phase shifts in different cases.
Article
Materials Science, Multidisciplinary
T. Karabassov et al.
Summary: This paper investigates the realization of the helical state in a hybrid system with spatially separated superconductivity and exchange field and demonstrates the resulting nonreciprocity in the system.
Article
Materials Science, Multidisciplinary
Henry F. Legg et al.
Summary: This paper investigates the superconducting diode effect caused by the magnetic field and proximity effect, and explores its applications in detecting inversion symmetry breaking and topological superconductivity phase transition.
Article
Materials Science, Multidisciplinary
Klaus Halterman et al.
Summary: We study trilayer Josephson junctions with arbitrary magnetizations in two dimensions and examine the spatial distribution and phase dependence of charge supercurrents, spin supercurrents, spin torques, and density of states. We find that under certain magnetization conditions, self-biased current enhancement and supercurrent diode effects can be achieved.
Article
Materials Science, Multidisciplinary
Mohammad Alidoust et al.
Summary: Recent research has uncovered a class of materials characterized by dominant SOC cubic in the wave vector, with unexplored superconducting properties. Experimental studies of Josephson junctions in these materials have revealed a strongly anharmonic current-phase relation and complex spin structure. The unique f-wave spin-triplet superconducting correlations in Josephson junctions with cSOC are important for superconducting spintronics and supporting Majorana bound states.
Article
Multidisciplinary Sciences
Fuyuki Ando et al.
Article
Materials Science, Multidisciplinary
Christina Knapp et al.
Article
Physics, Multidisciplinary
Ryohei Wakatsuki et al.
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Applied
D. Yu Vodolazov et al.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
Chui-Zhen Chen et al.
Article
Materials Science, Multidisciplinary
T. S. Jespersen et al.
Article
Multidisciplinary Sciences
Ryohei Wakatsuki et al.
Article
Materials Science, Multidisciplinary
Sunghun Park et al.
Article
Materials Science, Multidisciplinary
B. van Heck et al.
Article
Materials Science, Multidisciplinary
Konstantin N. Nesterov et al.
Article
Materials Science, Multidisciplinary
Fabrizio Dolcini et al.
Article
Materials Science, Multidisciplinary
Manuel Houzet et al.
Article
Physics, Multidisciplinary
A. A. Burlakov et al.
Article
Materials Science, Multidisciplinary
Teemu Ojanen
Article
Physics, Multidisciplinary
Johannes Reuther et al.
Article
Physics, Multidisciplinary
Teemu Ojanen
PHYSICAL REVIEW LETTERS
(2012)
Review
Physics, Multidisciplinary
Jason Alicea
REPORTS ON PROGRESS IN PHYSICS
(2012)
Article
Materials Science, Multidisciplinary
P. Roulleau et al.
Article
Physics, Applied
S. A. Harrington et al.
APPLIED PHYSICS LETTERS
(2009)
Article
Physics, Multidisciplinary
C. Fasth et al.
PHYSICAL REVIEW LETTERS
(2007)
Article
Materials Science, Multidisciplinary
AE Hansen et al.