Quantum Hall Effects in Silicene
نویسندگان
چکیده
منابع مشابه
Valley-polarized metals and quantum anomalous Hall effect in silicene.
Silicene is a monolayer of silicon atoms forming a two-dimensional honeycomb lattice, which shares almost every remarkable property with graphene. The low-energy structure of silicene is described by Dirac electrons with relatively large spin-orbit interactions due to its buckled structure. The key observation is that the band structure is controllable by applying electric field to silicene. We...
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We investigate the spin-orbit opened energy gap and the band topology in recently synthesized silicene as well as two-dimensional low-buckled honeycomb structures of germanium using first-principles calculations. We demonstrate that silicene with topologically nontrivial electronic structures can realize the quantum spin Hall effect (QSHE) by exploiting adiabatic continuity and the direct calcu...
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1 Preface The present notes cover a series of three lectures on the quantum Hall effect given at the Singapore session " Ultracold Gases and Quantum Information " at Les Houches Summer School 2009. Almost 30 years after the discovery of the quantum Hall effect, the research subject of quantum Hall physics has certainly acquired a certain degree of maturity that is reflected by a certain number ...
متن کاملValley polarized quantum Hall effect and topological insulator phase transitions in silicene
The electronic properties of silicene are distinct from both the conventional two dimensional electron gas and the famous graphene due to strong spin orbit interaction and the buckled structure. Silicene has the potential to overcome limitations encountered for graphene, in particular the zero band gap and weak spin orbit interaction. We demonstrate a valley polarized quantum Hall effect and to...
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The thermoelectric efficiency in different materials is measured by the quantity ZT, known as figure of merit. This quantity in bulk materials have values not higher than the unit, but in nanostructured systems can be improvement by different mechanism, such as quantum size effects and the reduction of the thermal conductance, reaching values greater than 1 [1]. In this work, we propose a two d...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2012
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.81.064705