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Recently, a new theory of superconductivity has been put forward that attributes the origin of superconductivity to the appearance of a non-trivial Berry connection from many-electron wave functions. This theory reproduces the major results…

Superconductivity · Physics 2024-03-14 Hiroyasu Koizumi

We study nonequilibrium steady states in a holographic superconductor under time periodic driving by an external rotating electric field. We obtain the dynamical phase diagram. Superconducting phase transition is of first or second order…

High Energy Physics - Theory · Physics 2018-12-19 Takaaki Ishii , Keiju Murata

As a first step towards our holographic investigation of the far-from-equilibrium physics of periodically driven systems at strong coupling, we explore the real time dynamics of holographic superconductor driven by a monochromatically…

High Energy Physics - Theory · Physics 2013-07-08 Wei-Jia Li , Yu Tian , Hongbao Zhang

We derive a one-step extension of the well known Swanson oscillator that describes a specific type of pseudo-Hermitian quadratic Hamiltonian connected to an extended harmonic oscillator model. Our analysis is based on the use of the…

Mathematical Physics · Physics 2015-08-04 Bijan Bagchi , Ian Marquette

A model, based on classical mechanics and thermodynamics and valid for \textit{all} superconductors, is devised to investigate the properties of the \textit{current-driven}, superconducting to normal transition. This process is shown to be…

General Physics · Physics 2019-12-23 Jacob Szeftel , Nicolas Sandeau , Michel Abou Ghantous

The superconducting diode effect (SDE), characterized by a nonreciprocal supercurrent, has attracted significant attention in recent years due to its potential applications. However, most studies have focused on weakly correlated models,…

Superconductivity · Physics 2026-05-05 Kai Chen , Pavan Hosur

The density functional theory for superconductors developed in the preceding article [cond-mat/0408685] is applied to the calculation of superconducting properties of several elemental metals. In particular, we present results for the…

We have investigated the effects of quantum fluctuations of quasiparticles on the operation of superconducting radio-frequency single-electron transistors (RF-SETs) for large values of the quasiparticle cotunneling parameter…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Madhu Thalakulam , Z. Ji , A. J. Rimberg

We consider the steady states of a harmonic oscillator coupled so strongly to a two-level system (a qubit) that the rotating wave approximation cannot be made. The Hamiltonian version of this model is known as the $E\otimes\beta$…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Charles P. Meaney , Tim Duty , Ross H. McKenzie , Gerard J. Milburn

Using a time-dependent Anderson Hamiltonian, a quantum dot with an ac voltage applied to a nearby gate is investigated. A rich dependence of the linear response conductance on the external frequency and driving amplitude is demonstrated. At…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Peter Nordlander , Ned S. Wingreen , Yigal Meir , David C. Langreth

We calculate the full frequency spectral density of voltage fluctuations in a Single Electron Transistor (SET), used as an electrometer biased above the Coulomb threshold so that the current through the SET is carried by sequential tunnel…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Andreas Kack , Goran Johansson , Goran Wendin

Superconducting field-effect transitor (SuFET) and Josephson field-effect transistor (JoFET) technologies take advantage of electric field induced control of charge carrier concentration in order to modulate the channel superconducting…

Mesoscale and Nanoscale Physics · Physics 2019-02-21 Federico Paolucci , Giorgio De Simoni , Elia Strambini , Paolo Solinas , Francesco Giazotto

Superconducting pairing of electrons in nanoscale metallic particles with discrete energy levels and a fixed number of electrons is described by the reduced BCS model Hamiltonian. We show that this model is integrable by the algebraic Bethe…

Superconductivity · Physics 2009-11-07 H. -Q. Zhou , J. Links , R. H. McKenzie , M. D. Gould

We show that the complex phase diagram of high $T_c$ superconductors can be deduced from a simple symmetry principle, a $SO(5)$ symmetry which unifies antiferromagnetism with $d$ wave superconductivity. We derive the approximate $SO(5)$…

Superconductivity · Physics 2008-02-03 Shou-Cheng Zhang

Nonreciprocity in superconductors is attracting much interest owing to its fundamental importance as well as its potential applicability to engineering. In this paper, we generalize the previous theories of the intrinsic superconducting…

Superconductivity · Physics 2022-12-20 Akito Daido , Youichi Yanase

A three-orbital model derived from the two-dimensional projection of the $ab$ $initio$ Hamiltonian for alkaline doped fullerene A$_3$C$_{60}$ with A=Cs,Rb,K is studied by a variational Monte Carlo method. We correctly reproduce the…

Strongly Correlated Electrons · Physics 2017-11-29 Takahiro Misawa , Masatoshi Imada

Nonreciprocal phenomena in the normal state are well established and key to many commercial applications. In contrast, superconducting analogs, such as the superconducting diode effect (SDE), are only starting to be experimentally explored…

Superconductivity · Physics 2023-03-22 Denis Kochan , Andreas Costa , Iaroslav Zhumagulov , Igor Žutić

We propose a model and derive analytical expressions for conductivity in heterogeneous fully anisotropic conductors with ellipsoid superconducting inclusions. This model and calculations are useful to analyze the observed temperature…

Superconductivity · Physics 2018-10-02 S. S. Seidov , K. K. Kesharpu , P. I. Karpov , P. D. Grigoriev

The charge distribution is a basic aspect of electrical transport. In this work we investigate the self-consistent charge response of normal-superconducting heterostructures. Of interest is the variation of the charge density due to voltage…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. Pilgram , H. Schomerus , A. M. Martin , M. Buttiker

A supercurrent transistor is a superconductor-semiconductor hybrid device in which the Josephson supercurrent is switched on and off using a gate voltage. While such devices have been studied using DC transport, radio-frequency measurements…

Mesoscale and Nanoscale Physics · Physics 2021-10-26 M. Mergenthaler , F. J. Schupp , A. Nersisyan , N. Ares , A. Baumgartner , C. Schönenberger , G. A. D. Briggs , P. J. Leek , E. A. Laird