铀化合物中的有效质量和场强化超导性

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Journal of the Physical Society of Japan Pub Date : 2024-05-27 DOI:10.7566/jpsj.93.064705

Vladimir P. Mineev

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引用次数: 0

摘要

基于电子-电子通过频率相关的磁感应强度所描述的磁波动而产生的相互作用，我们提出了铀化合物中的强耦合超导理论。电子有效质量的磁场依赖性是通过磁感应强度分量的磁场依赖性来表达的。研究表明，三重配对的强度以及向超导态过渡的临界温度也是由随磁场变化的磁感应强度决定的。研究结果将结合铁磁铀化合物 URhGe 和 UCoGe 以及最近发现的 UTe2 的性质进行讨论。

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Effective Mass and Field-Reinforced Superconductivity in Uranium Compounds

A theory of strong coupling superconductivity in uranium compounds has been developed, based on electron–electron interaction through magnetic fluctuations described by frequency-dependent magnetic susceptibility. The magnetic field dependence of the electron effective mass is expressed through the field dependence of the magnetic susceptibility components. It is shown that the intensity of triplet pairing, and hence the critical temperature of the transition to the superconducting state, is also determined by the field-dependent susceptibility. The results are discussed in relation to the properties of ferromagnetic uranium compounds URhGe and UCoGe, as well as the recently discovered UTe₂.

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来源期刊

Journal of the Physical Society of Japan 物理-物理：综合

CiteScore

3.40

自引率

17.60%

发文量

325

审稿时长

3 months

期刊介绍： The papers published in JPSJ should treat fundamental and novel problems of physics scientifically and logically, and contribute to the development in the understanding of physics. The concrete objects are listed below. Subjects Covered JPSJ covers all the fields of physics including (but not restricted to) Elementary particles and fields Nuclear physics Atomic and Molecular Physics Fluid Dynamics Plasma physics Physics of Condensed Matter Metal, Superconductor, Semiconductor, Magnetic Materials, Dielectric Materials Physics of Nanoscale Materials Optics and Quantum Electronics Physics of Complex Systems Mathematical Physics Chemical physics Biophysics Geophysics Astrophysics.