发表机构
Bar-Ilan University（巴伊兰大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文计算了量子霍尔区域石墨烯声子的内禀谷热霍尔电导率，源于电子-声子耦合诱导的声子谷霍尔粘度，并讨论了测量前景及推广至其他狄拉克材料。
AI 中文摘要
我们计算了在量子霍尔区域中（Semenoff能隙）石墨烯声子的（谷）热霍尔电导率的内禀贡献，在该区域体电子热输运被抑制。这里考虑的声子（谷）热霍尔输运源于由电子（谷）霍尔电导率和粘度通过几何电子-声子耦合诱导的声子（谷）霍尔粘度。如此产生的声子（谷）霍尔粘度被识别为最近在《物理快报A》第595卷，132096页（2026年）中引入的新兴（谷）霍尔粘度。虽然我们的计算针对石墨烯，但它们很可能推广到其他狄拉克材料，如第六族过渡金属二硫化物。我们讨论了在基于石墨烯的异质结构中测量声子热霍尔电导率的前景，并估计了在反演对称性破缺相中由电子诱导的相应谷响应。
英文摘要
We calculate the intrinsic contribution to the (valley) thermal Hall conductivity of phonons in (Semenoff-gapped) graphene in the quantum Hall regime where bulk electron thermal transport is suppressed. The (valley) thermal Hall transport of phonons considered here originates from a phonon (valley) Hall viscosity induced by electron (valley) Hall conductivity and viscosity via geometric electron-phonon coupling. The so generated phonon (valley) Hall viscosity is identified with the emergent (valley) Hall viscosity recently introduced in \textit{Phys. Lett. A} \textbf{595}, 132096 (2026). While our calculations refer to graphene, they may very well be generalized to other Dirac materials like group-VI transition metal dichalcogenides. We discuss the prospect of measuring the phonon thermal Hall conductivity in graphene-based heterostructures and estimate the corresponding valley response induced by electrons in the inversion symmetry broken phase.
Comments9 pages
