报告人：向龙俊 助理教授（深圳大学）

题目：Quantum Geometric Classification of Electromagnetic Responses in Solids

时间：2026年9月9日（周三）上午10：00

腾讯会议ID：142 685 021

联系人：安钧鸿、贾伟

报告摘要：

Quantum geometry plays a pivotal role in describing the exotic electromagnetic responses of Bloch electrons in solids. In this talk, I will first introduce the recently proposed Zeeman quantum geometry, which characterizes the geometric properties of Bloch states associated with spin degrees of freedom [1]. I will then discuss the quantum-geometric classification of linear and nonlinear spin magnetization in terms of Zeeman quantum geometry [2]. If time permits, I will further present a quantum-geometric classification of orbital-induced and spin-induced bilinear currents, which are governed by conventional and Zeeman quantum geometry, respectively [3]. These results establish a unified geometric perspective for understanding various electromagnetic responses in crystalline solids.

[1] L. Xiang#, J. Jia#, F. Xu, Z. Qiao, and J. Wang*, Phys. Rev. Lett.134, 116301 (2025).

[2] L. Xiang, H. Jin*, and J. Wang*, Phys. Rev. Lett.135, 146303 (2025).

[3] L. Xiang, J. Jia, F. Xu*, and J. Wang*, Phys. Rev. B113, L201406 (2026) (Editors’ Suggestion).

#: These authors contributed equally. *: Corresponding author.

个人简介：

向龙俊，深圳大学物理与光电工程学院助理教授。2021年获中国科学院大学物理学博士学位（上海科技大学联合培养）。主要从事凝聚态理论与量子输运研究，研究方向包括量子几何、非线性霍尔效应、非线性自旋输运、量子噪声等。近年来围绕量子几何驱动的电磁响应开展了一系列研究工作，相关成果以第一作者或共同第一作者身份发表于 Nature Communications、Physical Review Letters、Physical Review B 等期刊。