68 citations · 233 across the 8 of their papers we have counts for
14 papers
Photo-Nernst current in graphene
Helin Cao, Grant Aivazian, Zaiyao Fei +3
Photocurrent measurements provide a powerful means of studying the spatially resolved optoelectronic and electrical properties of a material or device. Generally speaking there are…
Magneto-Infrared Study of Topological Insulator Bi2Se3
W. Yu, X. Chen, Z. Jiang +5
We present a magneto-infrared spectroscopic study of thin Bi2Se3 single crystal flakes. Magneto-infrared transmittance and reflectance measurements are performed in the Faraday geo…
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…
Quantum Hall Effects in Monolayer-Bilayer Graphene Planar Junctions
Jifa Tian, Yongjin Jiang, Isaac Childres +3
The Hall resistance of a homogeneous electron system is well known to be anti-symmetric with respect to the magnetic field and the sign of charge carriers. We have observed that su…