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Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator
Yang Xu, Ireneusz Miotkowski, Chang Liu +7
A three-dimensional (3D) topological insulator (TI) is a quantum state of matter with a gapped insulating bulk yet a conducting surface hosting topologically-protected gapless surf…
Controlling and distinguishing electronic transport of topological and trivial surface states in a topological insulator
Helin Cao, Chang Liu, Jifa Tian +4
Topological insulators (TI), with characteristic Dirac-fermion topological surface states (TSS), have emerged as a new class of electronic materials with rich potentials for both n…
Topological insulator based spin valve devices: evidence for spin polarized transport of spin-momentum-locked topological surface states
Jifa Tian, Isaac Childres, Helin Cao +3
Spin-momentum helical locking is one of the most important properties of the nontrivial topological surface states (TSS) in 3D topological insulators (TI). It underlies the iconic…
Quantum and Classical Magnetoresistance in Ambipolar Topological Insulator Transistors with Gate-tunable Bulk and Surface Conduction
Jifa Tian, Cuizu Chang, Helin Cao +4
Weak antilocalization (WAL) and linear magnetoresistance (LMR) are two most commonly observed magnetoresistance (MR) phenomena in topological insulators (TIs) and often attributed…