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Volumn 91, Issue 16, 2015, Pages

Valley-polarized quantum anomalous Hall phases and tunable topological phase transitions in half-hydrogenated Bi honeycomb monolayers

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EID: 84929190370     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.91.165430     Document Type: Article
Times cited : (57)

References (47)
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    • Chern number (Equation presented) is an integer of Berry curvature (Equation presented) over the whole Brillouin zone and can be expressed explicitly as [7] C= 12π n ∫BZd2k Ωn. The above summation is over all occupied bands below the bulk gap, Ωn(k)=- n′≠n 2 Im((ψnk|vx|ψn′k)(ψn′k|vy|ψnk))(ωn′-ωn)2. Note this summation is over all bands except itself. (Equation presented). Velocity operator (Equation presented). The valley Chern numbers (Equation presented) and (Equation presented) are obtained by integrating the Berry curvature around two valleys (Equation presented) and (Equation presented), respectively
    • Chern number (Equation presented) is an integer of Berry curvature (Equation presented) over the whole Brillouin zone and can be expressed explicitly as [7] C= 12π n ∫BZd2k Ωn. The above summation is over all occupied bands below the bulk gap, Ωn(k)=- n′≠n 2 Im((ψnk|vx|ψn′k)(ψn′k|vy|ψnk))(ωn′-ωn)2. Note this summation is over all bands except itself. (Equation presented). Velocity operator (Equation presented). The valley Chern numbers (Equation presented) and (Equation presented) are obtained by integrating the Berry curvature around two valleys (Equation presented) and (Equation presented), respectively.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.