When both inversion and time-reversal symmetries are broken, the critical current of a superconductor can be nonreciprocal. In this work we show 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, and as a result, critical currents in the direction parallel and antiparallel to the Cooper pair momentum become unequal. This supercurrent diode effect is also manifested in the polarity-dependence of in-plane critical fields induced by a supercurrent. These nonreciprocal effects may be found in polar SrTiO$_3$ film, few-layer MoTe$_2$ in the $T_d$ phase, and twisted bilayer graphene in which the valley degrees of freedom plays the role analogous to spin.
CNR-SPIN(意大利国家研究委员会自旋物理研究所);Okayama University(冈山大学);Dipartimento di Fisica “E. R. Caianiello”, Università di Salerno(萨莱诺大学E.R.卡亚涅洛物理学系);NEST Istituto Nanoscienze-CNR and Scuola Normale Superiore(纳米科学研究所和比萨高等师范学院)
Supercurrent spin Hall effect enabled nanopillar Josephson diodes
School of Physical Sciences, National Institute of Science Education and Research (NISER)(国家科学教育研究中心物理科学学院);Homi Bhabha National Institute(霍米·巴巴国立研究所);Center for Interdisciplinary Sciences, National Institute of Science Education and Research (NISER)(国家科学教育研究中心交叉科学中心)
Interferometric evidence of non-volatile anomalous phase shifts in exchange-spin-split Josephson supercurrent diodes
Chung-Ang University (CAU)(中央大学);Max Planck Institute of Microstructure Physics(马克斯·普朗克微观结构物理研究所);Pohang University of Science and Technology (POSTECH)(浦项科技大学);Laboratoire de Physique de l'Ecole Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité(巴黎高等师范学校物理实验室,ENS,PSL大学,CNRS,索邦大学,巴黎第七大学,索邦巴黎城);Laboratoire de Physique et d'Etude des Matériaux, ESPCI Paris, PSL University, CNRS, Sorbonne Université(物理与材料研究实验室,ESPCI巴黎,PSL大学,CNRS,索邦大学)
Controllable Josephson diode effect, $0$-$π$ transition and switch effect in the superconductor/two-dimensional Weyl nodal line semimetal/superconductor junctions
A Kapitza Pendulum Route to Supercurrent Tunnel Diodes
Istituto di Struttura della Materia of the National Research Council(国家研究委员会材料结构研究所);Institute for Theoretical Solid State Physics, IFW Dresden(德累斯顿IFW理论固体质物理研究所);CNR-SPIN;Istituto Lombardo “Accademia di Scienze e Lettere”(伦巴第科学院与文学院);NEST Istituto Nanoscienze-CNR and Scuola Normale Superiore(CNR纳米科学研究所NEST与比萨高等师范学院);Würzburg-Dresden Cluster of Excellence ct.qmat(维尔茨堡-德累斯顿卓越集群ct.qmat);Universitá di Salerno(萨莱诺大学)
Pair Density Waves and Supercurrent Diode Effect in Altermagnets
The University of Tennessee(田纳西大学);Oak Ridge National Laboratory(橡树岭国家实验室);Hanyang University(汉阳大学);Technische Universität München(慕尼黑工业大学);Munich Center for Quantum Science and Technology (MCQST)(慕尼黑量子科学与技术中心);Imperial College London(帝国理工学院)
2.4 GHz Flip-flop Device within Nonequilibrium Superconducting Diode
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University(南京大学固态微结构国家重点实验室与先进微结构协同创新中心);College of Engineering and Applied Sciences, Nanjing University(南京大学工程与应用科学院);School of Materials Science and Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University(上海交通大学张江高等研究院材料科学与工程学院);School of Physics, Nanjing University(南京大学物理学院);State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science(中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室)
Gate-Switchable Josephson Diode Effect in Graphene via Magnetochiral Anisotropy
School of Optoelectronic Information Engineering, Shangrao Normal University(上饶师范学院光电信息工程学院);School of Mathematics and Physics, Shangrao Normal University(上饶师范学院数学与物理学院)
Entropy generation and momentum transfer in the superconductor-normal and normal-superconductor phase transformations and the consistency of the conventional theory of superconductivity
Diode Effect May Assist Finding Proper Superconductivity Mechanism in Copper Oxides
Institute for Physical Research, National Academy of Sciences(亚美尼亚国家科学院物理研究所);Laboratory of Advanced Quantum Materials and Devices, Institute for Quantum Studies, Chapman University(查普曼大学量子研究所先进量子材料与器件实验室)
Supercurrent Diode Effect in Josephson Interferometers with Multiband Superconductors
CNR-SPIN(意大利国家研究委员会自旋物理学研究所);Institute for Theoretical Solid State Physics, Leibniz-Institut für Festkörper- und Werkstoffforschung IFW-Dresden(德累斯顿勒布尼兹固体与材料研究所凝聚态物理理论研究所);Istituto Lombardo “Accademia di Scienze e Lettere”(伦巴第科学院);NEST Istituto Nanoscienze-CNR and Scuola Normale Superiore(意大利国家研究委员会纳米科学研究所与比萨高等师范学院);Universitá di Salerno(萨莱诺大学)