scholarly journals Effect of Electron-electron Interaction on Surface Transport in Three Dimensional Topological Insulators

2011 ◽  
Author(s):  
Hridis K. Pal ◽  
Vladimir I. Yudson ◽  
Dmitrii L. Maslov ◽  
Giti A. Khodaparast ◽  
Michael B. Santos ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Three Dimensional ◽  
Electron Interaction ◽  
Surface Transport

scholarly journals SPECTRAL CORRELATIONS IN DISORDERED MESOSCOPIC METALS AND THEIR RELEVANCE FOR PERSISTENT CURRENTS

1996 ◽  
Vol 10 (28) ◽  
pp. 1397-1406 ◽  
Author(s):  
AXEL VÖLKER ◽  
PETER KOPIETZ
Keyword(s):  
Energy Levels ◽  
Three Dimensional ◽  
Average Density ◽  
Electron Interaction ◽  
Energy Window ◽  
Persistent Currents ◽  
Dependent Part ◽  
The Difference ◽  
Aharonov Bohm ◽  
Grand Canonical

We use the Lanczos method to calculate the variance σ2(E, ϕ) of the number of energy levels in an energy window of width E below the Fermi energy for noninteracting disordered electrons on a thin three-dimensional ring threaded by an Aharonov–Bohm flux ϕ. We confirm numerically that for small E the flux-dependent part of σ2(E, ϕ) is well described by the Altshuler–Shklovskii-diagram involving two Cooperons. However, in the absence of electron–electron interactions this result cannot be extrapolated to energies E where the energy-dependence of the average density of states becomes significant. We discuss consequences for persistent currents and argue that for the calculation of the difference between the canonical- and grand canonical current it is crucial to take the electron–electron interaction into account.

Disorder-induced decoupled surface transport channels in thin films of doped topological insulators

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
Hanbum Park ◽  
Jimin Chae ◽  
Kwangsik Jeong ◽  
Hyejin Choi ◽  
Jaehun Jeong ◽  
...  
Keyword(s):  
Thin Films ◽  
Topological Insulators ◽  
Surface Transport ◽  
Transport Channels
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