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Correlation between superconductivity and bond angle of CrAs chain in non-centrosymmetric compounds A(2)Cr(3)As(3) (A = K, Rb)
Wang, Z; Yi, W; Wu, Q; Sidorov, VA; Bao, JK; Tang, ZT; Guo, J; Zhou, YZ; Zhang, S; Li, H; Shi, YG; Wu, XX; Zhang, L; Yang, K; Li, AG; Cao, GH; Hu, JP; Sun, LL; Zhao, ZX; Sun, LL (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.; Sun, LL (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.; Sun, LL (reprint author), Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China.
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Pages:-
Subtype期刊论文
AbstractNon-centrosymmetric superconductors, whose crystal structure is absent of inversion symmetry, have recently received special attentions due to the expectation of unconventional pairings and exotic physics associated with such pairings. The newly discovered superconductors A(2)Cr(3)As(3) (A = K, Rb), featured by the quasi-one dimensional structure with conducting CrAs chains, belongs to such kind of superconductor. In this study, we are the first to report the finding that superconductivity of A(2)Cr(3)As(3) (A = K, Rb) has a positive correlation with the extent of non-centrosymmetry. Our in-situ high pressure ac susceptibility and synchrotron x-ray diffraction measurements reveal that the larger bond angle of As-Cr-As (defined as a) in the CrAs chains can be taken as a key factor controlling superconductivity. While the smaller bond angle (defined as beta) and the distance between the CrAs chains also affect the superconductivity due to their structural connections with the alpha angle. We find that the larger value of alpha-beta, which is associated with the extent of the non-centrosymmetry of the lattice structure, is in favor of superconductivity. These results are expected to shed a new light on the underlying mechanism of the superconductivity in these Q1D superconductors and also to provide new perspective in understanding other non-centrosymmetric superconductors.
DOI10.1038/srep37878
Indexed BySCI
Language英语
WOS IDWOS:000388557300001
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/26458
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorSun, LL (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.; Sun, LL (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.; Sun, LL (reprint author), Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Z,Yi, W,Wu, Q,et al. Correlation between superconductivity and bond angle of CrAs chain in non-centrosymmetric compounds A(2)Cr(3)As(3) (A = K, Rb)[J]. SCIENTIFIC REPORTS,2016,6:-.
APA Wang, Z.,Yi, W.,Wu, Q.,Sidorov, VA.,Bao, JK.,...&Sun, LL .(2016).Correlation between superconductivity and bond angle of CrAs chain in non-centrosymmetric compounds A(2)Cr(3)As(3) (A = K, Rb).SCIENTIFIC REPORTS,6,-.
MLA Wang, Z,et al."Correlation between superconductivity and bond angle of CrAs chain in non-centrosymmetric compounds A(2)Cr(3)As(3) (A = K, Rb)".SCIENTIFIC REPORTS 6(2016):-.
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