论文标题
电力四极力矩的热力学方法
Thermodynamic approach to electric quadrupole moments
论文作者
论文摘要
如今，更高级的电/磁多极矩引起了人们的注意，作为外来物质阶段的候选秩序参数。但是，这些多极力矩的量子力学公式仍然是一个持续的问题。在本文中，我们提出了对轨道磁偶极矩和磁性四极矩的先前研究，对电二极管矩的热力学定义是对称破裂的量度。用基于铁的超导体的轨道序列列相模型来说明所获得的公式。
Higher-rank electric/magnetic multipole moments are attracting attention these days as candidate order parameters for exotic material phases. However, quantum-mechanical formulation of those multipole moments is still an ongoing issue. In this paper, we propose a thermodynamic definition of electric quadrupole moments as a measure of symmetry breaking, following previous studies of orbital magnetic dipole moments and magnetic quadrupole moments. The obtained formulas are illustrated with a model of orbital-ordered nematic phases of iron-based superconductors.
