Spin-orbit scattering in quantum diffusion of massive Dirac fermions

Abstract

Effect of spin-orbit scattering on quantum diffusive transport of two-dimensional massive Dirac fermions is studied by the diagrammatic technique. The quantum diffusion of massive Dirac fermions can be viewed as a singlet Cooperon in the massless limit and a triplet Cooperon in the large-mass limit. The spin-orbit scattering behaves like random magnetic fields only to the triplet Cooperon, and suppresses the weak localization of Dirac fermions in the large-mass regime. This behavior suggests an experiment to detect the weak localization of bulk subbands in topological insulator thin films, in which a narrowing of the cusp of the negative magnetoconductivity is expected after doping heavy-element impurities. Finally, a detailed comparison between the conventional two-dimensional electrons and Dirac fermions is presented for impurities of orthogonal, symplectic, and unitary symmetries.

5 pages, 3 figures, 2 tables. To be submitted, comments are welcome

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• Impurity effect on weak anti-localization in the topological insulator Bi2Te3
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Cited by in corpus (11)

• Quantum Transport in Topological Semimetals under Magnetic Fields
• Weak antilocalization and localization in disordered and interacting Weyl semimetals
• Weak localization and weak anti-localization in topological insulators
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Quantum Interference Theory of Magnetoresistance in Dirac Materials
• Quantum Transport in Weyl Semimetal Thin Films in the Presence of Spin-Orbit Coupled Impurities
• Comprehensive Analysis for the High Field Magneto-conductivity of Bi2Te3 Single Crystal
• A particular carbon-chain-producing region: L1489 starless core
• Transport in topological insulators with bulk-surface coupling: Interference corrections and conductance fluctuations
• Impact of novel electron-phonon coupling mechanisms on valley physics in two-dimensional materials
• Weak Localization in Systems with Chiral Spin Textures and Skyrmion Crystals