- Autor(in)
- Sponsor(in)
- Referenz
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[Sov. Phys. JETP 63 (1986) 866]
10 A. I. Buzdin, B. U. Vujičić, D. A. Kuptsov, Supercond. Sci. Technol. 2 (1989) 249
11 A. I. Buzdin, B. U. Vujičić, D. A. Kuptsov, ZhETF 96 (1989) 1094
12 V. G. Kogan, N. Nakagawa, S. L. Thiemann, Phys. Rev. B 42 (1990) 2631
13 A. I. Buzdin, A. Simonov, Physica C 168 (1990) 421
14 A. M. Grishin, A. Yu. Martynovich, S. v. Yampolskii, ZhETF 97 (1990) 1930
15 A. I. Buzdin, A. Simonov, Physica C 175 (1991) 143
16 L. J. Campbell, M. N. Doria, V. G. Kogan, Phys. Rev. B 38 (1988) 2439
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- Seitenbereich
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0296 - 0301
- Schlagwort(e)
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<KWD>Layered superconductor
Proximity effect
Quasi one-dimensional superconductor
- Zusammenfsg.
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A model of layered superconducting structure consisting of alternating anisotropic superconducting layers <I>S</I><sub>1</sub> and <I>S</I><sub>2</sub> with different transition temperatures is considered. It is shown that due to competition between two origins of anisotropy - effective-mass anisotropy of individual layers and proximity-induced anisotropy the effective anisotropy of the whole system signficiantly varies temperature. The components of the effective-mass tensor <I>m<sub>c</sub></I> (along the anisotropy axis) and <I>m<sub>a</sub></I> (perpendicular to the anisotropy axis) strongly depend upon temperature. This may lead to transition between layered (<I>m<sub>c</sub></I> > <I>m<sub>a</sub></I>) and quasi one-dimensional (<I>m<sub>c</sub></I> < <I>m<sub>a</sub></I>) types of anisotropy as well as to biaxial-type anisotropy which is also temperature dependent. The field distribution in a tilted vortex in a biaxial superconductor is calculated. The change in the properties of the vortex lattice with temperature in such systems is also investigated. The properties of YBa<sub>2</sub>Cu<sub>3</sub>O<sub><I>x</I></sub>/PrBa<sub>2</sub>Cu<sub>3</sub>O<sub><I>y</I></sub> multilayers are discussed in this connection.
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