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Low temperature saturation of phase coherence length in topological insulators
Saurav Islam, Semonti Bhattacharyya, Hariharan Nhalil +7
Implementing topological insulators as elementary units in quantum technologies requires a comprehensive understanding of the dephasing mechanisms governing the surface carriers in…
Bulk-impurity induced noise in large-area epitaxial thin films of topological insulators
Saurav Islam, Semonti Bhattacharyya, Abhinav Kandala +3
We report a detailed study on low-frequency 1/f-noise in large-area molecular-beam epitaxy grown thin (10 nm) films of topological insulators as a function of temperature, gate vol…
Large discrete jumps observed in the transition between Chern states in a ferromagnetic Topological Insulator
Minhao Liu, Wudi Wang, Anthony R. Richardella +5
A striking prediction in topological insulators is the appearance of the quantized Hall resistance when the surface states are magnetized. The surface Dirac states become gapped ev…
Visualization of superparamagnetic dynamics in magnetic topological insulators
E. Lachman, A. F. Young, A. Richardella +10
Quantized Hall conductance is a generic feature of two dimensional electronic systems with broken time reversal symmetry. In the quantum anomalous Hall state recently discovered in…
Giant Anisotropic Magnetoresistance in a Quantum Anomalous Hall Insulator
A. Kandala, A. Richardella, S. Kempinger +2
When a three-dimensional (3D) ferromagnetic topological insulator thin film is magnetized out-of-plane, conduction ideally occurs through dissipationless, one-dimensional (1D) chir…
Growth and Characterization of Hybrid Insulating Ferromagnet-Topological Insulator Heterostructure Devices
A. Kandala, A. Richardella, D. W. Rench +3
We report the integration of the insulating ferromagnet GdN with epitaxial films of the topological insulator Bi2Se3 and present detailed structural, magnetic and transport charact…