在石墨烯超晶格中观察到神秘的拓扑谷电流了吗?

IF 2.9 4区物理与天体物理 Q2 OPTICS

Journal of Nonlinear Optical Physics & Materials Pub Date : 2021-11-16 DOI:10.1088/2515-7639/ac452a

S. Roche, S. R. Power, Branislav K. Nikoli'c, Jose H. Garcia, A. Jauho

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引用次数: 7

摘要

我们对最近文献中提出的由全局贝里曲率和山谷霍尔效应驱动的拓扑谷流的主张进行了批判性的讨论。在指出解释巨大非局部电阻的理论场景的主要不一致之后，我们讨论了可能的替代解释和开放的研究方向，以解决石墨烯超晶格中的非局部输运之谜。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Have Mysterious Topological Valley Currents Been Observed in Graphene Superlattices?

We provide a critical discussion concerning the claim of topological valley currents, driven by a global Berry curvature and valley Hall effect proposed in recent litterature. After pointing out a major inconsistency of the theoretical scenario proposed to interpret giant nonlocal resistance, we discuss possible alternative explanations and open directions of research to solve the mystery of nonlocal transport in graphene superlattices.

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来源期刊

Journal of Nonlinear Optical Physics & Materials 物理-光学

CiteScore

3.00

自引率

48.10%

发文量

审稿时长

3 months

期刊介绍： This journal is devoted to the rapidly advancing research and development in the field of nonlinear interactions of light with matter. Topics of interest include, but are not limited to, nonlinear optical materials, metamaterials and plasmonics, nano-photonic structures, stimulated scatterings, harmonic generations, wave mixing, real time holography, guided waves and solitons, bistabilities, instabilities and nonlinear dynamics, and their applications in laser and coherent lightwave amplification, guiding, switching, modulation, communication and information processing. Original papers, comprehensive reviews and rapid communications reporting original theories and observations are sought for in these and related areas. This journal will also publish proceedings of important international meetings and workshops. It is intended for graduate students, scientists and researchers in academic, industrial and government research institutions.