Effect of perturbative hexagonal warping on quantum capacitance in ultra-thin topological insulators
نویسندگان
چکیده
منابع مشابه
Quantum Capacitance in Topological Insulators
Topological insulators show unique properties resulting from massless, Dirac-like surface states that are protected by time-reversal symmetry. Theory predicts that the surface states exhibit a quantum spin Hall effect with counter-propagating electrons carrying opposite spins in the absence of an external magnetic field. However, to date, the revelation of these states through conventional tran...
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A hexagonal warping term has been proposed recently to explain the experimentally observed 2D equal energy contours of the surface states of the topological insulator Bi2Te3. Differing from the Dirac fermion Hamiltonian, the hexagonal warping term leads to the opening up of a band gap by an in-plane magnetization. We study the transmission between two Bi2Te3 segments subjected to different in-p...
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form many different states of matter, such as crystalline solids, magnets, and superconductors. Those different states can be classified by the symmetries they spontaneously break— translational, rotational, and gauge symmetries, respectively, for the examples above. Before 1980 all states of matter in condensed-matter systems could be classified by the principle of broken symmetry. The quantum...
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ژورنال
عنوان ژورنال: Journal of Physics D: Applied Physics
سال: 2016
ISSN: 0022-3727,1361-6463
DOI: 10.1088/0022-3727/49/13/135003