Measuring valley polarization in two-dimensional materials with second-harmonic spectroscopy

A population imbalance at different valleys of an electronic system lowers its effective rotational symmetry. We introduce a technique to measure such imbalance - a valley polarization - that exploits the unique fingerprints of this symmetry reduction in the polarization-dependent second-harmonic ge...

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Veröffentlicht in:	arXiv.org 2019-12
Hauptverfasser:	Yi Wei Ho, Henrique Guimarães Rosa, Verzhbitskiy, Ivan, Manuel Jose de Lima Ferreira Rodrigues, Taniguchi, Takashi, Watanabe, Kenji, Goki Eda, Pereira, Vitor Manuel, Viana Gomes, José Carlos
Format:	Artikel
Sprache:	eng
Schlagworte:	Chalcogenides Graphene Laser beams Physics - Materials Science Physics - Optics Polarization Second harmonic generation Symmetry Transition metal compounds
Online-Zugang:	Volltext
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