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Mesoscopic Transport of Quantum Anomalous Hall Effect in Sub-Micron Size Regime
Gang Qiu, Peng Zhang, Peng Deng +4
The quantum anomalous Hall (QAH) effect has been demonstrated in two-dimensional topological insulator systems incorporated with ferromagnetism. However, a comprehensive understand…
Bilayer Quantum Hall States in an n-type Wide Tellurium Quantum Well
Chang Niu, Gang Qiu, Yixiu Wang +3
Tellurium (Te) is a narrow bandgap semiconductor with a unique chiral crystal structure. The topological nature of electrons in the Te conduction band can be studied by realizing n…
Raman Response and Transport Properties of One-Dimensional van der Waals Tellurium Nanowires
Jing-Kai Qin, Pai-Ying Liao, Mengwei Si +15
Tellurium can form nanowires of helical atomic chains. Given their unique one-dimensional van der Waals structure, these nanowires are expected to show remarkably different physica…
Gate-tunable Strong Spin-orbit Interaction in Two-dimensional Tellurium Probed by Weak-antilocalization
Chang Niu, Gang Qiu, Yixiu Wang +4
Tellurium (Te) has attracted great research interest due to its unique crystal structure since 1970s. However, the conduction band of Te is rarely studied experimentally because of…
Quantum Hall Effect of Weyl Fermions in Semiconducting n-type Tellurene
Gang Qiu, Chang Niu, Yixiu Wang +4
Dirac and Weyl nodal materials can host low-energy relativistic quasiparticles. Under strong magnetic fields, the topological properties of Dirac/Weyl materials can directly manife…
Imaging Carrier Inhomogeneities in Ambipolar Tellurene Field Effect Transistors
Samuel Berweger, Gang Qiu, Yixiu Wang +7
Developing van der Waals (vdW) homojunction devices requires materials with narrow bandgaps and simultaneously high hole and electron mobilities for bipolar transport, as well as m…
Steep-slope Hysteresis-free Negative Capacitance MoS2 Transistors
Mengwei Si, Chun-Jung Su, Chunsheng Jiang +8
The so-called Boltzmann Tyranny defines the fundamental thermionic limit of the subthreshold slope (SS) of a metal-oxide-semiconductor field-effect transistor (MOSFET) at 60 mV/dec…
\b{eta}-Ga2O3 on Insulator Field-effect Transistors with Drain Currents Exceeding 1.5 A/mm and Their Self-heating Effect
Hong Zhou, Kerry Maize, Gang Qiu +2
We have demonstrated that depletion/enhancement-mode b-Ga2O3 on insulator field-effect transistors can achieve a record high drain current density of 1.5/1.0 A/mm by utilizing a hi…
High Performance Depletion/Enhancement-Mode beta-Ga2O3 on Insulator (GOOI) Field-effect Transistors with Record Drain Currents of 600/450 mA/mm
Hong Zhou, Mengwei Si, Sami Alghmadi +3
In this letter, we report on high performance depletion/enhancement (D/E)-mode beta-Ga2O3 on insulator (GOOI) field-effect transistors (FETs) with record high drain currents (ID) o…