.png){kind=icon}
返回
Upper-branch thermal Hall effect in quantum paramagnets
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevResearch.6.023044.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Inspired by the persistent thermal Hall effects at finite temperatures in various quantum paramagnets, we explore the origin of the thermal Hall effects from the perspective of the upper branch parts by invoking dispersive and twisted crystal field excitations. It is shown that the upper branches of the local energy levels could hybridize and form dispersive bands. The observation is that, upon time-reversal symmetry breaking by the magnetic fields, these upper branch bands could acquire a Berry curvature distribution and contribute to the thermal Hall effect even in the paramagnetic regime. As a proof of principle, we consider the setting on kagom & eacute; lattice with one ground-state singlet and an excited doublet, and show this is indeed possible. We expect this effect to be universal and that it has no strong connection with the underlying lattice. Although the thermal Hall signal can be contributed from other sources such as phonons and their scattering in the actual materials, we discuss the application to the relevant quantum materials.
Keyword:
PYROCHLORE
CONDUCTIVITY
EXCITATIONS
SYSTEMS
PHASE
期刊
IF:
4.2
论文数:
7.6K
被引数:
2.7W
机构
引用论文
分享收藏Quantum paramagnetic ground states on the honeycomb lattice and field-induced Neel order.png)
PHYSICAL REVIEW B
OAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏Quantum phase diagram of the two-dimensional transverse-field Ising model: Unconstrained tree tensor network and mapping analysisPHYSICAL REVIEW BOAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏Elementary excitations in magnetically ordered systems with orbital degeneracyPHYSICAL REVIEW BOAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏The Crystal Structure of Phosphinothricin in the Active Site of Glutamine Synthetase Illuminates the Mechanism of Enzymatic InhibitionBiochemistry
BiochemistryIF0
PREAI
分享收藏
查看更多内容