Institutional Repository of Chinese Acad Sci, High Field Magnet Lab,Hefei 230031, Anhui, Peoples R China
Pressure-induced multiband superconductivity in pyrite PtBi2 with perfect electron-hole compensation | |
Chen, Xuliang1; Shao, Dexi2; Gu, Chuanchuan1; Zhou, Yonghui1; An, Chao1; Zhou, Ying1; Zhu, Xiangde1; Chen, Tong2; Tian, Mingliang1,3,4; Sun, Jian2,4; Yang, Zhaorong1,3,4 | |
2018-05-15 | |
发表期刊 | PHYSICAL REVIEW MATERIALS |
ISSN | 2475-9953 |
摘要 | We report on the discovery of pressure-induced superconductivity in the compensated semimetal pyrite PtBi2, which exhibits extreme magnetoresistance (XMR) and nontrivial band structure at ambient pressure. The appearance of superconductivity, first observed at P-C similar to 13 GPa with an onset critical temperature T-C of similar to 2.2 K, is accompanied by a pronounced enhancement of the density of electrons and holes based on Hall-effect measurements. Upon further compression, T-C remains almost unchanged up to 50.0 GPa; remarkably, the perfect electronhole compensation still holds, while the carrier mobility greatly reduces. No evident trace of structural phase transitions is detected through synchrotron x-ray diffraction over the measured pressure range of 1.5-51.2 GPa. These results highlight a multiband characteristic of the observed superconductivity, making pyrite PtBi2 unique among the compensated XMR materials where the pressure-induced superconductivity usually links to structural transitions and carrier imbalance. |
DOI | 10.1103/PhysRevMaterials.2.054203 |
关键词[WOS] | INSULATOR |
收录类别 | SCI |
语种 | 英语 |
资助项目 | NSF of Jiangsu[BK20150012] ; Nanjing University ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase)[U1501501] ; HIPS[YZJJ201621] ; Fundamental Research Funds for the Central Universities[TZ2016001] ; NSF of Anhui[1708085QA19] ; NSFC[11574133] ; NSFC[51372112] ; National Key Research and Development Program of China[2015CB921202] ; NSFC[11704387] ; NSFC[11574323] ; NSFC[U1632275] ; National Key Research and Development Program of China[2016YFA0300404] ; Science Challenge Project[TZ2016001] ; National Key Research and Development Program of China[2016YFA0401804] ; National Key Research and Development Program of China[2016YFA0401804] ; Science Challenge Project[TZ2016001] ; National Key Research and Development Program of China[2016YFA0300404] ; NSFC[U1632275] ; NSFC[11574323] ; NSFC[11704387] ; National Key Research and Development Program of China[2015CB921202] ; NSFC[51372112] ; NSFC[11574133] ; NSF of Anhui[1708085QA19] ; Fundamental Research Funds for the Central Universities[TZ2016001] ; HIPS[YZJJ201621] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase)[U1501501] ; Nanjing University ; NSF of Jiangsu[BK20150012] |
WOS研究方向 | Materials Science |
WOS类目 | Materials Science, Multidisciplinary |
WOS记录号 | WOS:000433037000005 |
出版者 | AMER PHYSICAL SOC |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/36593 |
专题 | 中科院强磁场科学中心 |
通讯作者 | Sun, Jian; Yang, Zhaorong |
作者单位 | 1.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, Peoples R China 2.Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 3.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Anhui, Peoples R China 4.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Xuliang,Shao, Dexi,Gu, Chuanchuan,et al. Pressure-induced multiband superconductivity in pyrite PtBi2 with perfect electron-hole compensation[J]. PHYSICAL REVIEW MATERIALS,2018,2(5):8. |
APA | Chen, Xuliang.,Shao, Dexi.,Gu, Chuanchuan.,Zhou, Yonghui.,An, Chao.,...&Yang, Zhaorong.(2018).Pressure-induced multiband superconductivity in pyrite PtBi2 with perfect electron-hole compensation.PHYSICAL REVIEW MATERIALS,2(5),8. |
MLA | Chen, Xuliang,et al."Pressure-induced multiband superconductivity in pyrite PtBi2 with perfect electron-hole compensation".PHYSICAL REVIEW MATERIALS 2.5(2018):8. |
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