Quantum geometry encoded to pair potentials,Physical Review B

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Quantum geometry encoded to pair potentials
Physical Review B ( IF 3.2 ) Pub Date : 2024-09-10 , DOI: 10.1103/physrevb.110.094505
Akito Daido ₁ , Taisei Kitamura ₁ , Youichi Yanase ₁

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Bloch wave functions of electrons have properties called quantum geometry, which has recently attracted much attention as the origin of intriguing physical phenomena. In this paper, we introduce the notion of the quantum-geometric pair potentials (QGPP) based on the generalized band representation and thereby clarify how the quantum geometry of electrons is transferred to the Cooper pairs they form. QGPP quantifies the deviation of multiband superconductors from an assembly of single-band superconductors and has a direct connection to the quantum-geometric corrections to thermodynamic coefficients. We also discuss their potential ability to emulate exotic pair potentials and engineer intriguing superconducting phenomena including topological superconductivity.

中文翻译：

量子几何编码成对势

电子的布洛赫波函数具有称为量子几何的特性，它最近作为有趣的物理现象的起源而引起了广泛的关注。在本文中，我们引入了基于广义能带表示的量子几何对势（QGPP）的概念，从而阐明了电子的量子几何结构如何转移到它们形成的库珀对。 QGPP 量化了多带超导体与单带超导体组件的偏差，并与热力学系数的量子几何校正有直接联系。我们还讨论了它们模拟奇异电势和设计有趣的超导现象（包括拓扑超导）的潜在能力。

更新日期：2024-09-11

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