Superconductivity in Novel BiS2-Based Layered Superconductor LaO1-xFxBiS2
Yoshikazu Mizuguchi,Yoshikazu Mizuguchi,Satoshi Demura,Keita Deguchi,Yoshihiko Takano,Hiroshi Fujihisa,Yoshito Gotoh,Hiroki Izawa,Osuke Miura +8 more
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In this paper, a new type of BiS 2 -based layered superconductor LaO 1- x F x BiS2, with a T c as high as 10.6 K, was reported.Abstract:
Layered superconductors have provided some interesting fields in condensed matter physics owing to the low dimensionality of their electronic states. For example, the high- T c (high transition temperature) cuprates and the Fe-based superconductors possess a layered crystal structure composed of a stacking of spacer (blocking) layers and conduction (superconducting) layers, CuO 2 planes or Fe-Anion layers. The spacer layers provide carriers to the conduction layers and induce exotic superconductivity. Recently, we have reported superconductivity in the novel BiS 2 -based layered compound Bi 4 O 4 S 3 . It was found that superconductivity of Bi 4 O 4 S 3 originates from the BiS 2 layers. The crystal structure is composed of a stacking of BiS 2 superconducting layers and the spacer layers, which resembles those of high- T c cuprate and the Fe-based superconductors. Here we report a discovery of a new type of BiS 2 -based layered superconductor LaO 1- x F x BiS 2 , with a T c as high as 10.6 K.read more
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Hidden spin polarization in inversion-symmetric bulk crystals
Xiuwen Zhang,Xiuwen Zhang,Xiuwen Zhang,Qihang Liu,Qihang Liu,Jun-Wei Luo,Arthur J Freeman,Alex Zunger +7 more
TL;DR: In this paper, it was shown that spin polarization due to spin-orbit coupling requires broken inversion symmetry, rather than global space-group asymmetry, and that a hitherto overlooked form of spin polarization should also exist in centrosymmetric structures.
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New Member of BiS2-Based Superconductor NdO1-xFxBiS2
Satoshi Demura,Satoshi Demura,Yoshikazu Mizuguchi,Yoshikazu Mizuguchi,Keita Deguchi,Keita Deguchi,Hiroyuki Okazaki,Hiroshi Hara,Hiroshi Hara,Tohru Watanabe,Tohru Watanabe,S. J. Denholme,S. J. Denholme,Masaya Fujioka,Toshinori Ozaki,Hiroshi Fujihisa,Yoshito Gotoh,Osuke Miura,Takahide Yamaguchi,Hiroyuki Takeya,Yoshihiko Takano,Yoshihiko Takano +21 more
TL;DR: In this article, a new BiS2-based superconductor NdOBiS2 was synthesized by F doping, which is composed of superconducting BiS 2 layers and blocking NdO layers.
Journal ArticleDOI
Superconductivity induced by electron doping in the system La1-xMxOBiS2 (M = Ti, Zr, Hf, Th)
Duygu Yazici,Kevin Huang,B. D. White,Inho Jeon,V. W. Burnett,Aaron J. Friedman,I. K. Lum,Manivannan Nallaiyan,S. Spagna,M. B. Maple +9 more
TL;DR: In this paper, the authors reported a strategy to induce superconductivity in the BiS$_2$-based compound LaOBiS$-2$ and showed that the superconducting and normal states were characterized by electrical resistivity, magnetic susceptibility, and heat capacity measurements.
Journal ArticleDOI
Superconductivity induced by electron doping in La 1-x M x OBiS 2 (M= Ti, Zr, Hf, Th)
Duygu Yazici,Kevin Huang,Benjamin White,Inho Jeon,V. W. Burnett,Aaron J. Friedman,I. K. Lum,Manivannan Nallaiyan,Stefano Spagna,M. B. Maple +9 more
TL;DR: In this paper, a strategy to induce superconductivity in the BiS-OBS-2-based compound LaOBiS${}_{2}$ was reported, which increased the charge-carrier density (electron dope) via substitution of tetravalent Th${}^{+4}$, Hf${}−4}, Zr${}+4}, and Ti${}€+4]$ for trivalent La${}´€+3}$.
Journal ArticleDOI
Pressure-induced Enhancement of Superconductivity in BiS$_2$-layered LaO$_{1-x}$F$_x$BiS$_2$
Takahiro Tomita,Masaya Ebata,Hideto Soeda,Hiroki Takahashi,Hiroshi Fujihisa,Yoshito Gotoh,Yoshikazu Mizuguchi,Hiroki Izawa,Osuke Miura,Satoshi Demura,Keita Deguchi,Yoshihiko Takano +11 more
TL;DR: In this paper, high-pressure X-ray diffraction measurements are performed under pressure to determine the pressure dependence of the superconducting transition temperature, and it is shown that the newly discovered BiS$_2$-based LaO$_{1-x}$F$_{x}-BiS$-2$ ($x$=0.5) becomes superconductive at $T_c$=2.5 K.
References
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