In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 40, No. 10A ( 2001-10-01), p. L1022-
Abstract:
The enhancement of the upper critical field, B c 2 , in a low temperature and high magnetic field region has been proposed theoretically, due to the mixing of d x 2 - y 2 - and d x y -symmetries for two-dimensional (2D) d-wave superconductors. Based on the B c 2 enhancement theory, the irreversibility field, B i , and the critical current density, J c , for high- T c superconductors were calculated using the power law of B i ∝ B c 2 n . It is found that both B i and J c for chemical vapor deposition (CVD)-processed YBa 2 Cu 3 O 7 can be well interpreted by the present model. This fact suggests that the concave temperature dependences of B i and J c originate from B c 2 for 2D d-wave superconductors. Moreover, the qualitative temperature dependence of B i for high- T c superconductors changes slightly with the anisotropy but the value of B i decreases drastically with increasing the anisotropic parameter γ 2 .
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.40.L1022
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2001
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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