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Anisotropy parameters of superconducting MgB$_2$ | | V.G. Kogan
; S.L. Bud’ko
; | | Date: |
17 Dec 2002 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | Data on macroscopic superconducting anisotropy of MgB$_2$ are reviewed. The data are described within a weak coupling two-gaps anisotropic s-wave model of superconductivity. The calculated ratio of the upper critical fields $gamma_H=H_{c2,ab}/H_{c2,c}$ increases with decreasing temperature in agreement with available data, whereas the calculated ratio of London penetration depths $gamma_{lambda}=lambda_c/lambda_{ab}$ decreases to reach $approx 1.1$ at T=0. Possible macroscopic consequences of $gamma_{lambda}
egamma_H$ are discussed. | | Source: | arXiv, cond-mat/0212383 | | Services: | Forum | Review | PDF | Favorites | |
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