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A superconductor with broken time reversal and inversion symmetry may exhibit nonreciprocal charge transport, including a nonreciprocal critical current, also known as superconducting diode effect. We report an intrinsic superconducting…

Superconductivity · Physics 2023-03-30 Robert Kealhofer , Hanbyeol Jeong , Arman Rashidi , Leon Balents , Susanne Stemmer

We propose that periodic driving can stabilize a new type of order, "period-doubled superconductivity", in which a superconducting order parameter oscillates at half the frequency of the drive. Despite having a zero time-averaged order…

Superconductivity · Physics 2022-09-14 Zhehao Dai , Vibhu Ravindran , Norman Y. Yao , Michael P. Zaletel

Superconduction manifests when a steady-state current flows through a material without an electric field being present. It is argued here that the absence of scattering of the charge-carriers, although absolutely necessary, is not…

General Physics · Physics 2007-05-23 Johan F. Prins

The superconducting diode effect (SDE), characterized by a nonreciprocal critical current in superconductors, has recently been observed in strongly correlated electron systems and near quantum criticality, pointing to unconventional…

Superconductivity · Physics 2026-05-04 Kyohei Nakamura , Youichi Yanase

We propose that the superconducting diode (SD) efficiency can be significantly enhanced near the transition between two superconducting states by choosing parameters where, before the system goes normal with increasing supercurrent, it…

Superconductivity · Physics 2026-02-19 Uddalok Nag , Jonathan Schirmer , Chao-Xing Liu , J. K. Jain

The transition from normal state to superconductive state is a condensation (Bose-Einstein condensation) process. As an example of Bose-Einstein condensation, the condensation process of superconductivity is investigated in detail. The…

Superconductivity · Physics 2020-09-01 Wenchen He

Electrodynamics of superconductors is primarily the electrodynamics of the Meissner state, a state characterized by zero magnetic induction of a superconducting fraction of conduction electrons. Simultaneously, the Meissner state is…

Superconductivity · Physics 2022-10-25 Vladimir Kozhevnikov

We study transport in the domain state, the so-called zero-resistance state, that emerges in a two-dimensional electron system in which the combined action of microwave radiation and magnetic field produces a negative absolute conductivity.…

Mesoscale and Nanoscale Physics · Physics 2014-02-18 I. A. Dmitriev , M. Khodas , A. D. Mirlin , D. G. Polyakov

We propose a new type of supercurrent diode effect on the surface of a superconductor with surface states under in-plane magnetic fields. Surface supercurrent diode effect can lead to a perfect supercurrent diode in a considerably wide…

Superconductivity · Physics 2023-05-11 Noah F. Q. Yuan

We investigate intrinsic superconducting diode effect in the unconventional superconducting state of $d$-wave altermagnets. We find large diode efficiencies in the wide-reaching finite-momentum pairing regimes of the phase diagram.…

Superconductivity · Physics 2024-08-16 Debmalya Chakraborty , Annica M. Black-Schaffer

Diodes have a nonreciprocal voltage versus current relationship, produced by breaking the space and time reversal symmetry. However, developing high-end superconducting computers requires a superconducting analogue of the traditional…

Superconductivity · Physics 2025-10-03 Cliff Sun , Ziqi Zhao , Alexey Bezryadin

Superconductors used in magnet technology could carry extreme currents because of their ability to keep the magnetic flux motionless. The dynamics of the magnetic flux interaction with superconductors is controlled by this property. The…

Accelerator Physics · Physics 2015-01-29 F Gömöry

We will describe a new superconductivity mechanism, proposed by the authors in [1], which is based on a topologically ordered ground state rather than on the usual Landau mechanism of spontaneous symmetry breaking. Contrary to anyon…

High Energy Physics - Theory · Physics 2007-05-23 M. C. Diamantini , P. Sodano , C. A. Trugenberger

A Josephson diode is a superconducting circuit element that enables non-reciprocal transport, allowing a dissipationless supercurrent to preferentially flow in a single direction. Existing methods for achieving the required symmetry…

Mesoscale and Nanoscale Physics · Physics 2025-03-11 David Scheer , Rubén Seoane Souto , Fabian Hassler , Jeroen Danon

We propose a realization of the superconducting diode effect in flux biased superconducting circuits of Josephson junctions. So far the observation of the superconducting diode effect has been limited to rather exotic material platforms. In…

Superconductivity · Physics 2022-12-07 Rafael Haenel , Oguzhan Can

The superconducting diode is an emergent device that juggles between the Cooper-paired state and the resistive state with unpaired quasiparticles. Here, we report a quantum version of the superconducting diode, which operates solely between…

Superconductivity · Physics 2025-09-30 Heng Wang , Yuying Zhu , Zhonghua Bai , Zhaozheng Lyu , Jiangang Yang , Lin Zhao , X. J. Zhou , Genda Gu , Qi-Kun Xue , Ding Zhang

The basic stages of development of the theory of superconductivity are traced. Despite of remarkable successes of theory, the physical explanation of the phenomenon of superconductivity - of the not fading electrical current in dissipative…

Statistical Mechanics · Physics 2007-05-23 Yu. L. Klimontovich

We study the diode effect of the supercurrent in the Josephson junctions with the loop current states as the tunneling barrier. The loop current states are realized by the Haldane model which preserves the inversion symmetry and thus…

Superconductivity · Physics 2025-05-16 Qi-Kai Shen , Yi Zhang

The normal and the superconducting state of two coupled CuO_2 layers in the High-T_c superconductors are investigated by using the bilayer Hubbard model, the FLEX approximation on the real frequency axis and the Eliashberg theory. We find…

Condensed Matter · Physics 2009-10-28 S. Grabowski , J. Schmalian , M. Langer , K. H. Bennemann

The physical mechanism of superconductivity is proposed on the basis of carrier-induced dynamic strain effect. By this new model, superconducting state consists of the dynamic bound state of superconducting electrons, which is formed by the…

Superconductivity · Physics 2010-12-07 Xue-Shu Zhao , Yu-Ru Ge , Xin Zhao , Hong Zhao