Huge Upper Critical Field and Electronic Instability in Pressure-induced Superconductor CeIrSi3without Inversion Symmetry in the Crystal Structure

2008 ◽  
Vol 77 (7) ◽  
pp. 073705 ◽  
Author(s):  
Rikio Settai ◽  
Yuichiro Miyauchi ◽  
Tetsuya Takeuchi ◽  
Florence Lévy ◽  
Ilya Sheikin ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Critical Field ◽  
Upper Critical Field ◽  
Inversion Symmetry

NON-CENTROSYMMETRIC HEAVY FERMION SUPERCONDUCTIVITY IN CeCoGe3

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3238-3245 ◽  
Author(s):  
R. SETTAI ◽  
Y. OKUDA ◽  
I. SUGITANI ◽  
Y. ŌNUKI ◽  
T. D. MATSUDA ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electrical Resistivity ◽  
Critical Field ◽  
Heavy Fermion ◽  
Ambient Pressure ◽  
Upper Critical Field ◽  
Inversion Symmetry ◽  
Tetragonal Crystal ◽  
Tetragonal Crystal Structure ◽  
Heavy Fermion Superconductivity

We measured the electrical resistivity under pressure for an antiferromagnet CeCoGe 3 without inversion symmetry in the tetragonal crystal structure. The Néel temperature T N1 = 21 K at ambient pressure decreases monotonically with increasing pressure, and becomes zero at about 5.5 GPa. Superconductivity appears above 4.3 GPa, with a superconduting transition temperature T sc = 0.72 K and a large upper critical field H c2 (0) = 7 T at 5.6 GPa. The large upper critical field H c2 (0)= 7 T exceeds the Pauli limitting field H p (≃ 1.86T sc )=1.3 T as in CePt 3 Si , CeRhSi 3 and CeIrSi 3. The large slope of H c2 at T sc , -dH c2 /dT = 18 T/K , at 5.6 GPa indicates the heavy-fermion superconductivity in CeCoGe 3.

Huge upper critical field in the superconductor with non-centrosymmetric crystal structure CeCoGe3

2010 ◽  
Vol 470 ◽  
pp. S536-S538 ◽  
Author(s):  
M.-A. Méasson ◽  
H. Muranaka ◽  
T.D. Matsuda ◽  
T. Kawai ◽  
Y. Haga ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Critical Field ◽  
Upper Critical Field

scholarly journals Extremely high upper critical field in BiCh2-based (Ch: S and Se) layered superconductor LaO0.5F0.5BiS2−xSex (x = 0.22 and 0.69)

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Kazuhisa Hoshi ◽  
Ryosuke Kurihara ◽  
Yosuke Goto ◽  
Masashi Tokunaga ◽  
Yoshikazu Mizuguchi
Keyword(s):  
Symmetry Breaking ◽  
Critical Field ◽  
Upper Critical Field ◽  
Layered Superconductor ◽  
Inversion Symmetry ◽  
Critical Fields ◽  
Local Inversion ◽  
Upper Critical Fields ◽  
Spin Polarisation ◽  
Inversion Asymmetry

AbstractCentrosymmetric compounds with local inversion symmetry breaking have tremendously interesting and intriguing physical properties. In this study, we focus on a BiCh2-based (Ch: S, Se) layered superconductor, as a system with local inversion asymmetry, because spin polarisation based on the Rashba–Dresselhaus-type spin–orbit coupling has been observed in centrosymmetric BiCh2-based LaOBiS2 systems, while the BiCh2 layer lacks local inversion symmetry. Herein, we report the existence of extremely high in-plane upper critical fields in the BiCh2-based system LaO0.5F0.5BiS2−xSex (x = 0.22 and 0.69). The superconducting states are not completely suppressed by the applied magnetic fields with strengths up to 55 T. Thus, we consider that the in-plane upper critical field is enhanced by the local inversion symmetry breaking and its layered structure. Our study will open a new pathway for the discovery of superconductors that exhibit a high upper critical field by focusing on the local inversion symmetry breaking.

Enhancement of critical temperature and upper critical field due to Nb substitution in Zr-V alloy superconductors

2020 ◽  
Author(s):  
Sabyasachi Paul ◽  
S. K. Ramjan ◽  
L. S. Sharath Chandra ◽  
Archna Sagdeo ◽  
M. K. Chattopadhyay
Keyword(s):  
Critical Temperature ◽  
Critical Field ◽  
Upper Critical Field

scholarly journals Experimental and theoretical analysis of the upper critical field in ferromagnet–superconductor–ferromagnet trilayers

2013 ◽  
Vol 26 (8) ◽  
pp. 085003 ◽  
Author(s):  
E Antropov ◽  
M S Kalenkov ◽  
J Kehrle ◽  
V I Zdravkov ◽  
R Morari ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Critical Field ◽  
Upper Critical Field

scholarly journals Superconductivity with High Upper Critical Field in the Cubic Centrosymmetric η-Carbide Nb4Rh2C1−δ

2021 ◽  
Author(s):  
KeYuan Ma ◽  
Karolina Gornicka ◽  
Robin Lefèvre ◽  
Yikai Yang ◽  
Henrik M. Rønnow ◽  
...  
Keyword(s):  
Critical Field ◽  
Upper Critical Field

Upper Critical Field of New Oxide Superconductor Bi-Sr-Ca-Cu-O

1988 ◽  
Vol 27 (Part 2, No. 4) ◽  
pp. L668-L669 ◽  
Author(s):  
Hiroaki Kumakura ◽  
Hitoshi Shimizu ◽  
Kazuhiko Takahashi ◽  
Kazumasa Togano ◽  
Hiroshi Maeda
Keyword(s):  
Critical Field ◽  
Upper Critical Field ◽  
Oxide Superconductor

Magnetization, upper critical field, and isotropy in single crystals YNi2B2C

1994 ◽  
Vol 235-240 ◽  
pp. 2533-2534 ◽  
Author(s):  
Ming Xu ◽  
B.K. Cho ◽  
P.C. Canfield ◽  
D.K. Finnemore ◽  
D.C. Johnston ◽  
...  
Keyword(s):  
Single Crystals ◽  
Critical Field ◽  
Upper Critical Field

scholarly journals The upper critical field of CeCoIn5

2011 ◽  
Vol 13 (11) ◽  
pp. 113039 ◽  
Author(s):  
Ludovic Howald ◽  
Georg Knebel ◽  
Dai Aoki ◽  
Gérard Lapertot ◽  
Jean-Pascal Brison
Keyword(s):  
Critical Field ◽  
Upper Critical Field

Upper critical field and thermopower studies in Ni substituted Li2Pd3B superconductor

2009 ◽  
Vol 149 (23-24) ◽  
pp. 899-902 ◽  
Author(s):  
Awadhesh Mani ◽  
N. Gayathri ◽  
A. Bharathi
Keyword(s):  
Critical Field ◽  
Upper Critical Field
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