Probing Quantum Capacitance in a 3D Topological Insulator
作者： D. A. Kozlov , D. Bauer , J. Ziegler , R. Fischer , M. L. Savchenko
DOI: 10.1103/PHYSREVLETT.116.166802
关键词:
摘要: We measure the quantum capacitance and probe thus directly electronic density of states high mobility, Dirac type two-dimensional electron system, which forms on surface strained HgTe. Here we show that observed magnetocapacitance oscillations probe-in contrast to magnetotransport-primarily top surface. Capacitance measurements constitute a powerful tool only one topological reconstruct its Landau level spectrum for different positions Fermi energy.
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