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A superconductor is a material that conducts electric current with no resistance. Superconductivity and magnetism are known to be antagonistic phenomena: superconductors expel weak external magnetic field (the Meissner effect) while a…

High Energy Physics - Phenomenology · Physics 2011-04-25 M. N. Chernodub

The magnetic response related to paramagnetic Meissner effect (PME) is studied in a high quality single crystal ZrB12 with non-monotonic vortex-vortex interactions. We observe the expulsion and penetration of magnetic flux in the form of…

The supercurrent field effect is experimentally realized in various nano-scale devices, based on the superconductivity suppression by external electric fields being effective for confined systems. In spite of intense research, a microscopic…

Superconductivity · Physics 2024-05-13 Alessio Zaccone , Vladimir M. Fomin

Despite metals are believed to be insensitive to field-effect and conventional Bardeen-Cooper-Schrieffer (BCS) theories predict the electric field to be ineffective on conventional superconductors, a number of gating experiments showed the…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 Federico Paolucci , Giorgio De Simoni , Paolo Solinas , Elia Strambini , Claudio Puglia , Nadia Ligato , Francesco Giazotto

The effect of a magnetic field on Josephson current has been studied for a superconductor/normal-metal/superconductor (SNS) system, where N is a two-dimensional electron gas in a confining potential. It is found that the dependence of…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Y. Ishikawa , H. Fukuyama

Solving phenomenological macroscopic equations instead of microscopic Ginzburg-Landau equations for superconductors is much easier and can be advantageous in a variety of applications. However, till now, only Bean's critical state model is…

Superconductivity · Physics 2016-12-16 Sangjun Oh , Dong Keun Oh , Won Nam Kang , Jung Ho Kim , Shi Xue Dou , Dojun Youm , Dong Ho Kim

We investigate effects of strong electron correlation on magnetoelectric transport phenomena in noncentrosymmetric superconductors with particular emphasis on its application to the recently discovered heavy-fermion superconductor…

Superconductivity · Physics 2009-11-11 Satoshi Fujimoto

Sensitive detection of magnetic field is one of the open problem in metrology. Here, we propose an Mach-Zehnder atomic interferometry to sensitively detect the very weak local magnetic field, which is expelled by the superconductor (as the…

Quantum Physics · Physics 2022-05-17 Y. Q. Chai , M. Zhang , L. F. Wei

Conventional superconductors are strong diamagnets that through the Meissner effect expel magnetic fields. It would therefore be surprising if a superconducting ground state would support spontaneous magnetics fields. Such time-reversal…

Superconductivity · Physics 2015-09-02 Mikael Håkansson , Tomas Löfwander , Mikael Fogelström

Nowadays superconductors serve in numerous applications, from high-field magnets to ultra-sensitive detectors of radiation. Mesoscopic superconducting devices, i.e. those with nanoscale dimensions, are in a special position as they are…

Mesoscale and Nanoscale Physics · Physics 2016-04-27 M. Taupin , I. M. Khaymovich , M. Meschke , A. S. Mel'nikov , J. P. Pekola

We present a method to determine the nodal structure of the energy gap of unconventional superconductors such as high $T_c$ materials. We show how nonlinear electrodynamics phenomena in the Meissner regime, arising from the presence of…

Superconductivity · Physics 2009-10-30 Igor Zutic , Oriol T. Valls

Alfven's theorem states that in a perfectly conducting fluid magnetic field lines move with the fluid without dissipation. When a metal becomes superconducting in the presence of a magnetic field, magnetic field lines move from the interior…

Superconductivity · Physics 2026-03-03 J. E. Hirsch

The Meissner-Ochsenfeld effect is demonstrated for the first time at room temperature. The diamagnetic response of a silicon nanostructure with edge channels covered by chains of negative U dipole boron centers is studied when put in…

Mesoscale and Nanoscale Physics · Physics 2026-02-11 N. T. Bagraev , N. A. Dovator , L. E. Klyachkin , A. M. Malyarenko

The problem of the giant vortex state around a magnetic dot which is embedded in a superconducting film is investigated. The full non-linear, self-consistent Ginzburg-Landau equations are solved numerically in order to calculate the free…

Condensed Matter · Physics 2009-10-28 I. K. Marmorkos , A. Matulis , F. M. Peeters

Non-invasive magnetic field sensing using optically - detected magnetic resonance of nitrogen-vacancy (NV) centers in diamond was used to study spatial distribution of the magnetic induction upon penetration and expulsion of weak magnetic…

The thermodynamics of irreversible processes in continuous media predicts the existence of a Magnetic Nernst effect that results from a magnetic analog to the Seebeck effect in a ferromagnet and magnetophoresis occurring in a paramagnetic…

Mesoscale and Nanoscale Physics · Physics 2016-01-20 Sylvain D. Brechet , Jean-Philippe Ansermet

The parity breaking gives rise to rich superconducting properties through the admixture of even and odd-parity Cooper pairs. A new light has been shed on parity-breaking superconductors by recent observations of nonreciprocal responses such…

Superconductivity · Physics 2022-04-06 Hikaru Watanabe , Akito Daido , Youichi Yanase

We report on the realization and characterization of a magnetic microtrap for ultra cold atoms near a straight superconducting Nb wire with circular cross section. The trapped atoms are used to probe the magnetic field outside the…

Atomic Physics · Physics 2009-11-13 D. Cano , B. Kasch , H. Hattermann , R. Kleiner , C. Zimmermann , D. Koelle , J. Fortágh

We examine the effects of nonlocal electrodynamics for a d-wave superconductor on the field dependence of the magnetic penetration depth. The linear field dependence predicted in the local limit, commonly known as the nonlinear Meissner…

Superconductivity · Physics 2009-10-31 M. -R. Li , P. J. Hirschfeld , P. Woelfle

We study the ratchet effect in a narrow pinning-free superconductive ring based on time-dependent Ginzburg-Landau (TDGL) equations. Voltage responses to external dc an ac currents at various magnetic fields are studied. Due to asymmetric…

Superconductivity · Physics 2021-01-07 Ji Jiang , Yong-Lei Wang , M. V. Milošević , Zhi-Li Xiao , F. M. Peeters , Qing-Hu Chen