TY - JOUR
T1 - Angle dependence of Hc2 with a crossover between the orbital and paramagnetic limits
AU - Matsuoka, Hideki
AU - Nakano, Masaki
AU - Shitaokoshi, Takashi
AU - Ouchi, Takumi
AU - Wang, Yue
AU - Kashiwabara, Yuta
AU - Yoshida, Satoshi
AU - Ishizaka, Kyoko
AU - Kawasaki, Masashi
AU - Kohama, Yoshimitsu
AU - Nojima, Tsutomu
AU - Iwasa, Yoshihiro
N1 - Publisher Copyright:
© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2020/3
Y1 - 2020/3
N2 - A pair-breaking mechanism of a superconductor under magnetic fields, namely, the origin of the upper critical field Hc2, can be categorized into the orbital effect and the paramagnetic effect, which have been separately discussed so far because the physical pictures are totally different. Here we propose a model that unifies these two origins into one formalism with a generalized physical picture. The obtained formula well describes the experimental results on the angle dependence of Hc2 in a recently developed noncentrosymmetric superconductor, two-dimensional (2D) NbSe2, providing essential information on the spin states of Cooper pairs in 2D NbSe2. The proposed model is widely applicable to all superconductors, offering a powerful approach for comprehensive understanding of the origin of Hc2.
AB - A pair-breaking mechanism of a superconductor under magnetic fields, namely, the origin of the upper critical field Hc2, can be categorized into the orbital effect and the paramagnetic effect, which have been separately discussed so far because the physical pictures are totally different. Here we propose a model that unifies these two origins into one formalism with a generalized physical picture. The obtained formula well describes the experimental results on the angle dependence of Hc2 in a recently developed noncentrosymmetric superconductor, two-dimensional (2D) NbSe2, providing essential information on the spin states of Cooper pairs in 2D NbSe2. The proposed model is widely applicable to all superconductors, offering a powerful approach for comprehensive understanding of the origin of Hc2.
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U2 - 10.1103/PhysRevResearch.2.012064
DO - 10.1103/PhysRevResearch.2.012064
M3 - Article
AN - SCOPUS:85101945014
VL - 2
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 1
M1 - 012064
ER -