Stauber, T. ; González, J. ; Gómez-Santos, G.
Alternative Links zum Volltext:DOIVerlag
Dokumentenart: | Artikel |
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Titel eines Journals oder einer Zeitschrift: | Physical Review B |
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Verlag: | AMER PHYSICAL SOC |
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Ort der Veröffentlichung: | COLLEGE PK |
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Band: | 102 |
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Nummer des Zeitschriftenheftes oder des Kapitels: | 8 |
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Datum: | 2020 |
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Institutionen: | Physik > Institut für Theoretische Physik |
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Identifikationsnummer: | Wert | Typ |
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10.1103/PhysRevB.102.081404 | DOI |
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Stichwörter / Keywords: | MOIRE BANDS; |
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Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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Status: | Veröffentlicht |
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Begutachtet: | Ja, diese Version wurde begutachtet |
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An der Universität Regensburg entstanden: | Ja |
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Dokumenten-ID: | 49753 |
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Zusammenfassung
We derive a simple formula for the real-space chirality of twisted bilayer graphene that can be related to the cross product of its sheet currents. This quantity shows well-defined plateaus for the first remote band as a function of the gate voltage which are approximately quantized for commensurate twist angles. The zeroth plateau corresponds to the first magic angle where a sign change occurs ...
Zusammenfassung
We derive a simple formula for the real-space chirality of twisted bilayer graphene that can be related to the cross product of its sheet currents. This quantity shows well-defined plateaus for the first remote band as a function of the gate voltage which are approximately quantized for commensurate twist angles. The zeroth plateau corresponds to the first magic angle where a sign change occurs due to an emergent C-6 symmetry. Our observation offers a new definition of the magic angle based on a macroscopic observable which is accessible in typical transport experiments.