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Probing Quantum Capacitance in a 3D Topological Insulator

Kozlov, D. A., Bauer, Dominik, Ziegler, Johannes, Fischer, Ralf, Savchenko, M.L., Kvon, Z. D., Mikhailov, N. N., Dvoretsky, S. A. and Weiss, Dieter (2016) Probing Quantum Capacitance in a 3D Topological Insulator. Physical Review Letters (PRL) 116 (16), pp. 166802-1.

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We measure the quantum capacitance and probe thus directly the electronic density of states of the high mobility, Dirac type two-dimensional electron system, which forms on the surface of strained HgTe. Here we show that observed magnetocapacitance oscillations probe—in contrast to magnetotransport—primarily the top surface. Capacitance measurements constitute thus a powerful tool to probe only ...


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Item type:Article
Date:22 April 2016
Institutions:Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
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Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:33796
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