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It is analyzed what fundamental new information for the properties of the superconductors can be obtained by systematic investigation of the Bernoulli effect. It is shown that it is a tool to determine the effective mass of Cooper pairs,…

超导电性 · 物理学 2009-11-10 T. Mishonov , E. Penev

On a basis of earlier substantiated expression for effective potential of electron-electron attraction in metals the assumption of an opportunity of formation of classically bound pairs is put forward. It was shown that in distinction from…

超导电性 · 物理学 2007-05-23 I. M. Yurin , V. B. Kalinin

We present a self-consistent approach to deal with the pairing-fluctuation effects in quasi-two-dimensional superconducting systems. Besides the Cooper pairs in the Bose-Einstein condensate, there are pairs occupying the excited states,…

超导电性 · 物理学 2009-11-07 Xin-Zhong Yan

We study a two-component Bose gas with a symmetric spin-orbit coupling, and find that two atoms can form a bound state with any intra- or inter-species scattering length. Consequently, in the dilute limit, the Bardeen-Cooper-Shrieffer (BCS)…

量子气体 · 物理学 2017-10-02 Dekun Luo , Lan Yin

By recognizing the vital importance of two-hole Cooper pairs (CPs) in addition to the usual two-electron ones in a strongly-interacting many-electron system, the concept of CPs was re-examined with striking conclusions. Based on this,…

超导电性 · 物理学 2009-11-11 M. de Llano , M. Grether

The Cooper pair binding energy {\it vs.} center-of-mass-momentum dispersion relation for Bose-Einstein condensation studies of superconductivity is found in two dimensions for a renormalized attractive delta interaction. It crosses over…

强关联电子 · 物理学 2015-06-24 S. K. Adhikari , M. Casas , A. Puente , A. Rigo , M. Fortes , M. A. Solís , M. de Llano , A. A. Valladares , O. Rojo

Electrons in a multielectron bubble in helium form a spherical, two-dimensional system coupled to the ripplons at the bubble surface. The electron-ripplon coupling, known to lead to polaronic effects, is shown to give rise also to Cooper…

超导电性 · 物理学 2007-05-23 J. Tempere , V. N. Gladilin , I. F. Silvera , J. T. Devreese

A theoretical model is developed for treating super conductive Bose-Einstein condensation (BEC) effects for excitons in planar systems, under the condition that many excitons are included in a surface area, with the dimensions of the…

介观与纳米尺度物理 · 物理学 2015-05-20 Y. Ben-Aryeh

The process of electron-positron pair creation and oscillation in uniform electric field is studied, taking into account Pauli exclusion principle. Generally, we find that pair creation is suppressed, hence coherent oscillations occur on…

等离子体物理 · 物理学 2023-07-18 Mikalai Prakapenia , Gregory Vereshchagin

The Hamiltonian and trial function in the BCS theory are improved to test the limit of this theory. The Cooper pairs arise from standing electron waves, ready to move with atoms, giving high Tc. The Hamiltonian is derived from alternating…

超导电性 · 物理学 2007-05-23 X. H. Zheng

We investigate particle condensation in a driven pair exclusion process on one- and two- dimensional lattices under the periodic boundary condition. The model describes a biased hopping of particles subject to a pair exclusion constraint…

统计力学 · 物理学 2012-03-06 Sang-Woo Kim , Jae Dong Noh

In an atomic Bose-Einstein condensate quenched to the unitary regime, we predict the sequential formation of a significant fraction of condensed pairs and triples. At short-distances, we demonstrate the two-body and Efimovian character of…

Analyzing the exchange energy of two conduction electrons in a crystal we find that the exchange energy may be negative and, thus, a singlet state may be favorable. A full overlap in real space of wave functions of two conduction electrons…

综合物理 · 物理学 2023-04-28 Stanislav Dolgopolov

Cooper pair (CP) binding with both zero and nonzero center-of-mass momenta (CMM) is studied with a set of renormalized equations assuming a short-ranged (attractive) pairwise interfermion interaction. Expanding the associated dispersion…

超导电性 · 物理学 2016-08-16 J. Batle , M. Casas M. Fortes , M. A. Solís , M. de Llano , A. A. Valladares , O. Rojo

A simple microscopic model of a small superconducting loop interrupted by Josephson junction (flux qubit) allows to compute from the experimental data of Wal et.al \cite{Wal} an important parameter - the density of Cooper pairs at zero…

量子物理 · 物理学 2011-01-04 Robert Alicki

Pauli exclusion between the carriers of $N$ excitons induces novel many-body effects, quite different from the ones generated by Coulomb interaction. Using our commutation technique for interacting close-to-boson particles, we here…

介观与纳米尺度物理 · 物理学 2009-11-07 O. Betbeder-Matibet , M. Combescot

We present an exploratory study of structure of 13C, 15C, 17C and 19C, showing that the simple one-quasiparticle projected BCS (PBCS) model is capable to account for several important properties of these nuclei. Next we discuss the…

核理论 · 物理学 2008-11-26 A. R. Samana , T. Tarutina , F. Krmpotić , M. S. Hussein , T. T. S. Kuo

Three typical algorithms of Pauli blocking in the quantum molecular dynamics type models are investigated in the nuclear matter, the nucleus and the heavy ion collisions. The calculations in nuclear matter show that the blocking ratios…

核理论 · 物理学 2021-03-25 Xiang Chen , Yingxun Zhang , Zhuxia Li

In nuclear matter at neutron-star densities and temperatures, Cooper pairing leads to the formation of a gap in the nucleon excitation spectra resulting in exponentially strong Boltzmann suppression of many transport coefficients. Previous…

核理论 · 物理学 2017-01-17 Mark G. Alford , Kamal Pangeni

We discuss the concept of Cooper pair in the context of recent experimental studies of radio-frequency excitations in ultracold atomic gases. We argue that the threshold energy determines the size of the Cooper pair emergent from the exact…

其他凝聚态物理 · 物理学 2008-03-17 J. Dukelsky , G. Ortiz