Upper critical field in the model with finite-range interaction between electrons

A. V. Shumilin; V. V. Baranov; V. V. Kabanov

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Upper critical field in the model with finite-range interaction between electrons

机译：电子之间具有有限范围相互作用的模型上临界场

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We develop a theory of the upper critical field in a BCS superconductor with a nonlocal interaction between electrons. We have shown that the nonlocal interaction is characterized by the parameter k_F po, where k_F is the Fermi momentum and po is the radius of electron-electron interaction. The presence of the external magnetic field leads to the generation of additional components of the order parameter with different angular momenta. This effect leads to the enhancement of the upper critical field above the orbital limiting field. In addition the upward curvature in the temperature dependence of H_c2(T) in the clean limit is predicted. The impurity scattering suppresses the effect in the dirty limit.

机译：我们开发了BCS超导体中具有电子之间非局部相互作用的上临界场的理论。我们已经表明，非局部相互作用的特征在于参数k_F po，其中k_F是费米动量，po是电子-电子相互作用的半径。外部磁场的存在导致具有不同角动量的阶数参数的附加分量的产生。该效果导致在轨道极限场之上的上临界场的增强。此外，还可以预测干净极限内H_c2（T）的温度依赖性的向上弯曲。杂质的散射抑制了脏极限的影响。

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《Physical review》 |2016年第17期|174506.1-174506.7|共7页
作者
A. V. Shumilin; V. V. Baranov; V. V. Kabanov;
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Ioffe Institute, 194021 St.-Petersburg, Russia;

Department of Physics, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium;

Department for Complex Matter, Jozef Stefan Institute, 1001 Ljubljana, Slovenia;

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1. Upper critical field in the model with finite-range interaction between electrons [J] . Shumilin A. V., Baranov V. V., Kabanov V. V. Physical review, B . 2016,第17期

机译：电子之间具有有限范围相互作用的模型上临界场
2. Convergence of the Critical Finite-Range Contact Process to Super-Brownian Motion Above the Upper Critical Dimension: The Higher-Point Functions [J] . van der Hofstad Remco, Sakai Akira Electronic Journal of Probability . 2010,第4期

机译：临界有限范围接触过程对上临界尺寸以上的超布朗运动的收敛：高点函数
3. Upper critical field in electron-doped cuprate superconductor Nd _(2-x)Ce_xCuO_(4+δ): Two-gap model [J] . Charikova T.B., Shelushinina N.G., Harus G.I., Physica, C. Superconductivity and its applications . 2013,第Null期

机译：电子掺杂的铜酸盐超导体Nd _（2-x）Ce_xCuO_（4 +δ）的上临界场：两间隙模型
4. ANOMALOUS TEMPERATURE DEPENDENCE OF THE UPPER CRITICAL MAGNETIC FIELD IN ELECTRON-DOPED HIGH-TEMPERATURE SUPERCONDUCTOR [C] . Tatyana B. Charikova, Nina G. Shelushinina, German I. Harus, Moscow International Symposium on Magnetism . 2015

机译：电子掺杂高温超导体中的上临界磁场的异常温度依赖性
5. Upper critical magnetic fields in quasi-one-dimensional layered superconductors. [D] . Sepper, Otar. 2015

机译：准一维分层超导体中的上临界磁场。
6. Exactly solvable model of two trapped quantum particles interacting via finite-range soft-core interactions [O] . Przemysław Kościk, Tomasz Sowiński -1

机译：两个被俘获的量子粒子通过有限范围软核相互作用相互作用的精确可解模型
7. Upper critical field in the model with finite range interaction between electrons [O] . Shumilin, A. V., Baranov, V. V., Kabanov, V. V. 2016

机译：具有有限范围相互作用的模型中的上临界场电子
8. Upper Critical Field and Critical Temperature for Superconducting Alloys Described by the Anderson model. [R] . Arnold, G. B. 1974

机译：安德森模型描述的超导合金的上临界场和临界温度。

Upper critical field in the model with finite-range interaction between electrons

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