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Superconductor/ferromagnet/superconductor heterostructures exhibit a so-called long-range proximity effect provided some layers of conical magnet Holmium are included in the respective interface regions. The Ho layers lead to a spin-flip…

Superconductivity · Physics 2015-04-06 Daniel Fritsch , James F. Annett

We find that the dependence on temperature and magnetic field of the electrical resistance of diffusive ferromagnetic nano-wires measured with superconducting electrodes changes drastically with the distance, $L$, between the…

Superconductivity · Physics 2007-05-23 V. T. Petrashov , I. A. Sosnin , C. Troadec

We consider quasi-two-dimensional gas of electrons in a typical Si-MOSFET, assuming repulsive contact interaction between electrons. Magnetisation and susceptibility are evaluated within the mean-field approach. Finite thickness of the…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 D. I. Golosov

The spin dynamics of photoexcited carriers in semiconductors in contact with a ferromagnet is treated theoretically and compared with time-dependent Faraday rotation experiments. The long time response of the system is found to be governed…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Gerrit E. W. Bauer , Arne Brataas , Yaroslav Tserkovnyak , Bertrand I. Halperin , Maciej Zwierzycki , Paul J. Kelly

The intrinsic pinning in high-temperature superconductor with long range antiferromagnetic order of rare-earth ions confined to the isolating planes is described. The interaction of antiferromagnetic and superconducting subsystems in the…

Superconductivity · Physics 2009-10-30 Tomasz Krzyszton

In the quasi-twodimensional (Q2D) electron gas of an InAs channel between an AlSb substrate and superconducting Niobium layers the proximity effect induces a pair potential so that a Q2D mesoscopic superconducting-normal-superconducting…

Superconductivity · Physics 2009-10-31 Arne Jacobs , Reiner Kümmel , Hartmut Plehn

Vortons are extended superconducting rings, which hypothetically may play a role in cosmology and even may have significance in connection with cosmic rays of high energy. Some of these objects are able to confine fermions which…

High Energy Physics - Theory · Physics 2023-04-26 Fernando Chamizo , Osvaldo Santillán

The field of scalar and vector potentials in electrodynamics is shown to represent an informational field capable of superluminally transmitting a signal (information) with no energy and momentum transfer. This conclusion strictly follows…

General Physics · Physics 2007-05-23 V. P. Oleinik

Giant oscillations of the density of electronic states and the differential conductance of a superconductor-ferromagnet-superconductor structure are predicted for the case when the exchange energy, $I_0$, due to the interaction between the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Kadigrobov , R. I. Shekhter , M. Jonson

In this work, it is considered a nanostructure composed by a quantum dot coupled to two ferromagnets and a superconductor. The transport properties of this system are studied within a generalized mean-field approximation taking into account…

Mesoscale and Nanoscale Physics · Physics 2014-09-19 E. C. Siqueira , P. A. Orellana , A. C. Seridonio , R. C. Cestari , M. S. Figueira , G. G. Cabrera

The effect of smooth inhomogeneities near a superconductor boundary on the magnetic penetration depth $\lambda$ is studied with emphasis on the proximity-induced spatial dependence of the Cooper pair amplitude. The influence of surface pair…

Superconductivity · Physics 2014-01-08 Yu. S. Barash

Iron, cobalt and nickel are archetypal ferromagnetic metals. In bulk, electronic conduction in these materials takes place mainly through the $s$ and $p$ electrons, whereas the magnetic moments are mostly in the narrow $d$-electron bands,…

Strongly Correlated Electrons · Physics 2009-06-18 M. R. Calvo , J. Fernández-Rossier , J. J. Palacios , D. Jacob , D. Natelson , C. Untiedt

The possible heavy fermion superconductivity is carefully reexamined in the two-dimensional Kondo lattice model with an antiferromagnetic Heisenberg superexchange between local magnetic moments. In order to establish an effective mean field…

Strongly Correlated Electrons · Physics 2012-08-02 Yu Liu , Huan Li , Guang-Ming Zhang , L. Yu

Circularly polarized electromagnetic wave impinging on a conducting ring generates a circulating DC plasmonic current resulting in an Inverse Faraday Effect in nanorings. We show that a large ring with periodically modulated width on a…

Mesoscale and Nanoscale Physics · Physics 2022-04-20 G. R. Aizin , J. Mikalopas , M. Shur

We develop a phenomenological model of superconductivity near a domain wall in a ferromagnet. In addition to the electromagnetic interaction of the order parameter with the ferromagnetic magnetization, we take into account the possibility…

Superconductivity · Physics 2009-11-10 K. V. Samokhin , D. Shirokoff

The interaction between a superconducting vortex in a type II superconducting film (SC) and a ferromagnet (FM) with out-of-plane magnetization is investigated theoretically within the London approximation. The dependence of the interaction…

Superconductivity · Physics 2009-11-10 M. V. Milosevic , F. M. Peeters

Systems in which exchange interactions couple carrier spins to a spin texture with a net chirality exhibit a spin-dependent Aharonov-Bohm effect, where the geometric gauge field and pseudo-magnetic field have opposite signs for carriers…

Superconductivity · Physics 2024-12-31 Zhiyu Dong , Leonid Levitov , Patrick A. Lee

We present a theory of Andreev reflection in a ferromagnet/superconductor/ferromagnet double junction system. The spin polarized quasiparticles penetrate to the superconductor in the range of penetration depth from the interface by the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Taro Yamashita , Hiroshi Imamura , Saburo Takahashi , Sadamichi Maekawa

The phase of the wave function of charged matter is sensitive to the value of the electric potential, even when the matter never enters any region with non-vanishing electromagnetic fields. Despite its fundamental character, this archetypal…

High Energy Physics - Theory · Physics 2020-05-13 Thomas C. Bachlechner , Matthew Kleban

The electromagnetic properties of superconductors near a ferromagnetic instability are investigated by means of a generalized Ginzburg-Landau theory. It is found that the magnetic flux expulsion capability of the superconductor gets…

Superconductivity · Physics 2009-11-11 Qi Li , D. Belitz , T. R. Kirkpatrick
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