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Metal-Insulator Transition in Variably Doped (Bi1-xSbx)2Se3 Nanosheets
Chee Huei Lee, Rui He, ZhenHua Wang +8
Topological insulators are novel quantum materials with metallic surface transport, but insulating bulk behavior. Often, topological insulators are dominated by bulk contributions…
Ambipolar Surface Conduction in Ternary Topological Insulator Bi_2(Te_{1-x}Se_x)_3 Nanoribbons
ZhenHua Wang, Richard L. J. Qiu, Chee Huei Lee +2
We report the composition and gate voltage induced tuning of transport properties in chemically synthesized Bi2(Te1-xSex)3 nanoribbons. It is found that increasing Se concentration…
One-Dimensional Quantum Confinement Effect Modulated Thermoelectric Properties in InAs Nanowires
Yuan Tian, Mohammed R. Sakr, Jesse M. Kinder +5
We report electrical conductance and thermopower measurements on InAs nanowires synthesized by chemical vapor deposition. Gate modulation of the thermopower of individual InAs nano…