Journal ArticleDOI
Electronic topological and structural transition in AuIn 2 under pressure
TLDR
In this article, electrical resistivity, thermoelectric power, and high-pressure x-ray-diffraction measurements are carried out to investigate the anomaly observed earlier in fusion data around 3 GPa in the intermetallic compound.Abstract:
Electrical resistivity, thermoelectric power, and high-pressure x-ray-diffraction measurements are carried out to investigate the anomaly observed earlier in fusion data around 3 GPa in the intermetallic compound ${\mathrm{AuIn}}_{2}.$ While the imaging plate high-pressure angle-dispersive data indicate a structural phase transition beyond 8 GPa, the thermoelectric power shows a peak around 2 GPa, indicating the occurrence of an electronically driven isostructural transition. The first-principles linearized muffin-tin orbital calculations reveal that this transition is brought about by interception of the Fermi level by the energy-band maximum. The Lifshitz nature of this transition is responsible for the anomaly in the high-pressure electrical and fusion data.read more
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Journal ArticleDOI
Large Improvement in Thermoelectric Properties in Pressure-Tuned p-Type Sb1.5Bi0.5Te3
TL;DR: In this paper, the authors reported a large increase in the thermoelectric power of p-doped antimony bismuth telluride alloys upon pressure tuning under nonhydrostatic compression conditions.
Journal ArticleDOI
Pressure-Induced Electronic Transition in Black Phosphorus.
Ziji Xiang,G. J. Ye,C. Shang,B. Lei,Naizhou Wang,Kongqing Yang,Da-Yong Liu,F. B. Meng,X. G. Luo,X. G. Luo,Liang-Jian Zou,Zhe Sun,Zhe Sun,Yue-Yu Zhang,Yue-Yu Zhang,Xianhui Chen,Xianhui Chen,Xianhui Chen +17 more
TL;DR: It is shown that a moderate hydrostatic pressure effectively suppresses the band gap in the elemental semiconductor black phosphorus, above which black phosphorus evolves into a semimetal state that is characterized by a colossal positive magnetoresistance and a nonlinear field dependence of Hall resistivity.
Journal ArticleDOI
Superconductivity in Topological Insulator Sb2Te3 Induced by Pressure
Juye Zhu,Jizhou Zhang,P. P. Kong,S. J. Zhang,X. H. Yu,X. H. Yu,Jinlong Zhu,Jinlong Zhu,Q. Q. Liu,Xuequan Li,Rong Yu,Rajeev Ahuja,Wenge Yang,Guoyin Shen,Ho-kwang Mao,Hongming Weng,Xi Dai,Zhi-Peng Fang,Yusheng Zhao,Yusheng Zhao,Changqing Jin +20 more
TL;DR: In this paper, the authors reported the discovery of superconductivity in the topological compound Sb2Te3 when pressure was applied, and the crystal structure analysis results reveal that superconductivities at a low-pressure range occurs at the ambient phase.
Journal ArticleDOI
Theoretical studies on the thermopower of semiconductors and low-band-gap crystalline polymers
Xing Gao,Kentaro Uehara,Dennis D. Klug,Serguei Patchkovskii,John S. Tse,John S. Tse,Terry M. Tritt +6 more
TL;DR: In this article, a numerical procedure has been used for the prediction of the Seebeck coefficient of a crystalline material based on its electronic band structure with the goal of testing this approach on the simple polymers polythiophene and polyaminosquaraine.
Journal ArticleDOI
Superconductivity in Topological Insulator Sb2Te3 Induced by Pressure
Juye Zhu,Jizhou Zhang,P. P. Kong,S. J. Zhang,X. H. Yu,X. H. Yu,Jinlong Zhu,Jinlong Zhu,Q. Q. Liu,Xuequan Li,Rong Yu,Rajeev Ahuja,Wenge Yang,Guoyin Shen,Ho-kwang Mao,Hongming Weng,Xi Dai,Zhi-Peng Fang,Yusheng Zhao,Yusheng Zhao,Changqing Jin +20 more
TL;DR: In this article, the authors reported the discovery of superconductivity in the topological compound Sb2Te3 when pressure was applied, and the crystal structure analysis results reveal that superconductivities at a low-pressure range occurs at the ambient phase.