文章基本信息

标题：ABOUT THE TIME EVOLUTION OF COHERENT ELECTRON STATES IN MONOLAYERS OF BORON ALLOTROPES
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作者：Erik Díaz-Bautista
期刊名称：Acta Polytechnica
印刷版ISSN：1210-2709
电子版ISSN：1805-2363
出版年度：2022
卷号：62
期号：1
页码：38-49
DOI：10.14311/AP.2022.62.0038
语种：English
出版社：Czech Technical University in Prague
摘要：In this paper, we theoretically analyze the massless Dirac fermion dynamics in twodimensional monolayers of boron allotropes, 8B and 2BH − pmmn borophene, interacting with external electric and magnetic fields. We study the effect of the Dirac cone tilt in these materials, which is known as valley index, through the time evolution of probability density of coherent electron states as well as their phase-space representation obtained via the Wigner function. Our results show that the time evolution of the coherent electron states in these materials is valley dependent, which is reinforced in the presence of external electric fields.
关键词：Tilted Dirac cones;anisotropic Dirac materials;borophene;coherent states;Wigner function