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Non-uniform carrier density in CdAs evidenced by optical spectroscopy
I. Crassee, E. Martino, C. C. Homes +13
We report the detailed optical properties of CdAs crystals in a wide parameter space: temperature, magnetic field, carrier concentration and crystal orientation. We investi…
Electron-hole balanced dynamics in the type-II Weyl semimetal candidate WTe2
M. Caputo, L. Khalil, E. Papalazarou +5
We present a time- and angular-resolved photoemission (TR-ARPES) study of the transition- metal dichalcogenide WTe2, a candidate type II Weyl semimetal exhibiting extremely large m…
Observation of the Quantum Spin Hall Effect up to 100 Kelvin in a Monolayer Crystal
Sanfeng Wu, Valla Fatemi, Quinn D. Gibson +4
The field of topological insulators (TI) was sparked by the prediction of the quantum spin Hall effect (QSHE) in time reversal invariant systems, such as spin-orbit coupled monolay…
Non-Magnetic Half-Metals
Zhonghao Liu, Setti Thirupathaiah, Alexander Yaresko +4
Half-metals are a class of materials that are metallic only for one spin direction, and are essential for spintronics applications where one needs to read, write, store and transfe…
Magnetoresistance and Quantum Oscillations of an Electrostatically Tuned Semimetal-to-Metal Transition in Ultra-Thin WTe2
Valla Fatemi, Quinn D. Gibson, Kenji Watanabe +3
We report on electronic transport measurements of electrostatically gated nano-devices of the semimetal WTe\textsubscript{2}. High mobility metallic behavior is achieved in the 2D…
An optical investigation of the strong spin-orbital coupled magnetic semimetal YbMnBi
Dipanjan Chaudhuri, Bing Cheng, Alexander Yaresko +3
Strong spin-orbit coupling (SOC) can result in ground states with non-trivial topological properties. The situation is even richer in magnetic systems where the magnetic ordering c…