Manifestation of Topological Protection in Transport Properties of Epitaxial Thin Films

AA Taskin, S Sasaki, K Segawa, Y Ando - Physical review letters, 2012 - APS
The massless Dirac fermions residing on the surface of three-dimensional topological
insulators are protected from backscattering and cannot be localized by disorder, but such …

Electron interaction-driven insulating ground state in BiSe topological insulators in the two-dimensional limit

M Liu, CZ Chang, Z Zhang, Y Zhang, W Ruan, K He… - Physical Review B …, 2011 - APS
We report a transport study of ultrathin Bi 2 Se 3 topological insulators with thickness from
one quintuple layer to six quintuple layers grown on sapphire by molecular beam epitaxy. At …

[HTML][HTML] Surface conduction of topological Dirac electrons in bulk insulating Bi2Se3

D Kim, S Cho, NP Butch, P Syers, K Kirshenbaum… - Nature Physics, 2012 - nature.com
The newly discovered three-dimensional strong topological insulators (STIs) exhibit
topologically protected Dirac surface states,. Although the STI surface state has been …

[HTML][HTML] 2D layered transport properties from topological insulator Bi2Se3 single crystals and micro flakes

O Chiatti, C Riha, D Lawrenz, M Busch, S Dusari… - Scientific Reports, 2016 - nature.com
Low-field magnetotransport measurements of topological insulators such as Bi 2 Se 3 are
important for revealing the nature of topological surface states by quantum corrections to the …

[HTML][HTML] Coherent topological transport on the surface of Bi2Se3

D Kim, P Syers, NP Butch, J Paglione… - Nature …, 2013 - nature.com
The two-dimensional surface of the three-dimensional topological insulator is in the
symplectic universality class and should exhibit perfect weak antilocalization reflected in …

Thickness-Independent Transport Channels in Topological Insulator Thin Films

N Bansal, YS Kim, M Brahlek, E Edrey, S Oh - Physical review letters, 2012 - APS
With high quality topological insulator Bi 2 Se 3 thin films, we report thickness-independent
transport properties over wide thickness ranges. Conductance remained nominally constant …

Thickness-dependent bulk properties and weak antilocalization effect in topological insulator BiSe

YS Kim, M Brahlek, N Bansal, E Edrey… - Physical Review B …, 2011 - APS
We show that a number of transport properties in topological insulator (TI) Bi 2 Se 3 exhibit
striking thickness dependences over a range of up to five orders of thickness (3 nm–170 …

Hexagonally Deformed Fermi Surface of the 3D Topological Insulator

K Kuroda, M Arita, K Miyamoto, M Ye, J Jiang… - Physical review …, 2010 - APS
A hexagonal deformation of the Fermi surface of Bi 2 Se 3 has been for the first time
observed by angle-resolved photoemission spectroscopy. This is in contrast to the general …

Photoemission Spectroscopy of Magnetic and Nonmagnetic Impurities on the Surface of the Topological Insulator

T Valla, ZH Pan, D Gardner, YS Lee, S Chu - Physical Review Letters, 2012 - APS
Dirac-like surface states on surfaces of topological insulators have a chiral spin structure that
suppresses backscattering and protects the coherence of these states in the presence of …

Emergence of Decoupled Surface Transport Channels in Bulk Insulating Thin Films

M Brahlek, N Koirala, M Salehi, N Bansal, S Oh - Physical review letters, 2014 - APS
In ideal topological insulator (TI) films the bulk state, which is supposed to be insulating,
should not provide any electric coupling between the two metallic surfaces. However …