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Tunable Chirality-dependent Nonlinear Electrical Responses in 2D Tellurium
Chang Niu, Gang Qiu, Yixiu Wang +6
Tellurium (Te) is an elemental semiconductor with a simple chiral crystal structure. Te in a two-dimensional (2D) form synthesized by solution-based method shows excellent electric…
Distinguishing two-component anomalous Hall effect from topological Hall effect
Lixuan Tai, Bingqian Dai, Jie Li +14
In transport, the topological Hall effect (THE) presents itself as non-monotonic features (or humps and dips) in the Hall signal and is widely interpreted as a sign of chiral spin…
Ultrafast Photoinduced Band Splitting and Carrier Dynamics in Chiral Tellurium Nanosheets
Giriraj Jnawali, Yuan Xiang, Samuel M. Linser +10
Trigonal tellurium (Te) is a chiral semiconductor that lacks both mirror and inversion symmetries, resulting in complex band structures with Weyl crossings and unique spin textures…
Thermoelectric Performance of 2D Tellurium with Accumulation Contacts
Gang Qiu, Shouyuan Huang, Mauricio Segovia +5
Tellurium (Te) is an intrinsically p-type doped narrow bandgap semiconductor with excellent electrical conductivity and low thermal conductivity. Bulk trigonal Te has been theoreti…
Quantum Transport and Band Structure Evolution under High Magnetic Field in Few-Layer Tellurene
Gang Qiu, Yixiu Wang, Yifan Nie +4
Quantum Hall effect (QHE) is a macroscopic manifestation of quantized states which only occurs in confined two-dimensional electron gas (2DEG) systems. Experimentally, QHE is hoste…
Controlled Growth of a Large-Size 2D Selenium Nanosheet and Its Electronic and Optoelectronic Applications
Jingkai Qin, Gang Qiu, Jie Jian +9
Selenium has attracted intensive attention as a promising material candidate for future optoelectronic applications. However, selenium has a strong tendency to grow into nanowire f…
1D van der Waals Material Tellurium: Raman Spectroscopy under Strain and Magneto-transport
Yuchen Du, Gang Qiu, Yixiu Wang +4
Experimental demonstrations of 1D van der Waals material tellurium have been presented by Raman spectroscopy under strain and magneto-transport. Raman spectroscopy measurements hav…
Field-effect transistors made from solution-grown two-dimensional tellurene
Yixiu Wang, Gang Qiu, Ruoxing Wang +9
The reliable production of two-dimensional crystals is essential for the development of new technologies based on 2D materials. However, current synthesis methods suffer from a var…
Observation of Optical and Electrical In-plane Anisotropy in High-mobility Few-layer ZrTe5
Gang Qiu, Yuchen Du, Adam Charnas +7
Transition metal pentatelluride ZrTe5 is a versatile material in condensed-matter physics and has been intensively studied since the 1980s. The most fascinating feature of ZrTe5 is…