Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.196804
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- DOE [DE-AC02-05CH11231]
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The surface of a topological insulator is a closed two-dimensional manifold. The surface states are described by the Dirac Hamiltonian in curved two-dimensional spaces. For a slablike sample with a magnetic field perpendicular to its top and bottom surfaces, there are chiral states delocalized on the four side faces. These chiral sheets carry both charge and spin currents. In strong magnetic fields, the quantized charge Hall effect [sigma(xy)=(2n+1)e(2)/h] will coexist with spin Hall effect.
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