Pressure-induced superconductivity in topological semimetal NbAs2
Pressure-induced superconductivity in topological semimetal NbAs2
复制标题
拓扑半金属 NbAs2 中的压力诱导超导
DOI:
10.1038/s41535-018-0132-1
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发表时间:
2018-11
影响因子:
5.7
通讯作者:
Xu Zhu-An
中科院分区:
文献类型:
--
作者:
Li Yupeng;An Chao;Hua Chenqiang;Chen Xuliang;Zhou Yonghui;Zhou Ying;Zhang Ranran;Park Changyong;Wang Zhen;Lu Yunhao;Zheng Yi;Yang Zhaorong;Xu Zhu-An
Topological superconductivity with Majorana bound states, which are critical to implement nonabelian quantum computation, may be realized in three-dimensional semimetals with nontrivial topological feature, when superconducting transition occurs in the bulk. Here, we report pressure-induced superconductivity in a transition-metal dipnictide NbAs2. The emergence of superconductivity is not accompanied by any structural phase transition up to the maximum experimental pressure of 29.8 GPa, as supported by pressure-dependent synchrotron X-ray diffraction and Raman spectroscopy. Intriguingly, the Raman study reveals rapid phonon mode hardening and broadening above 10 GPa, in coincident with the superconducting transition. Using first-principle calculations, we determine Fermi surface change induced by pressure, which steadily increases the density of states without breaking the electron–hole compensation. Noticeably, the main hole pocket of NbAs2encloses one time-reversal-invariant momenta of the monoclinic lattice, suggesting NbAs2as a candidate of topological superconductors.
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DOI:
--
发表时间:
2016-03
期刊:
arXiv: Strongly Correlated Electrons
影响因子:
--
作者:
Zheng Wang;Yupeng Li;Yunhao Lu;Zhixuan Shen;Feng Sheng;C. Feng;Yi Zheng;Zhu-An Xu
通讯作者:
Zheng Wang;Yupeng Li;Yunhao Lu;Zhixuan Shen;Feng Sheng;C. Feng;Yi Zheng;Zhu-An Xu
影响因子:
16.6
作者:
Pan XC;Chen X;Liu H;Feng Y;Wei Z;Zhou Y;Chi Z;Pi L;Yen F;Song F;Wan X;Yang Z;Wang B;Wang G;Zhang Y
通讯作者:
Zhang Y
影响因子:
56.9
作者:
Nadj-Perge, Stevan;Drozdov, Ilya K.;Yazdani, Ali
通讯作者:
Yazdani, Ali
DOI:
10.2172/974192
发表时间:
2009-03
期刊:
Bulletin of the American Physical Society
影响因子:
--
作者:
T. Hughes;X. Qi;S. Raghu;Shoucheng Zhang
通讯作者:
T. Hughes;X. Qi;S. Raghu;Shoucheng Zhang
DOI:
10.1063/1.4940924
发表时间:
2016-01
期刊:
arXiv: Materials Science
影响因子:
--
作者:
Desheng Wu;J. Liao;W. Yi;Xia Wang;Peigang Li;H. Weng;Youguo Shi;Yongqing Li;Jian-lin Luo-
通讯作者:
Desheng Wu;J. Liao;W. Yi;Xia Wang;Peigang Li;H. Weng;Youguo Shi;Yongqing Li;Jian-lin Luo-