Vortex State in Double Transition Superconductors
نویسندگان
چکیده
منابع مشابه
Vortex lattice transition in D-wave superconductors
Making use of the extended Ginzburg Landau theory, which includes the fourth order derivative term, we study the vortex state in a magnetic field parallel to the c axis. The vortex core structure is distorted due to this higher order term, which reveals the fourfold symmetry. Further, this distortion gives rise to the core interaction energy, which favors a square lattice tilted by 45 from the ...
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We study the vortex state in a magnetic field parallel to the c axis in the framework of the extended Ginzburg Landau equation. We find the vortex acquires a fourfold modulation proportional to cos(4φ) where φ is the angle r makes with the a-axis. This term gives rise to an attractive interaction between two vortices when they are aligned parallel to (1, 1, 0) or (1,−1, 0). We predict the first...
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We show that the density of states and the thermodynamic properties of a two-dimensional d-wave superconductor in the vortex state with applied magnetic field H in the plane depend on the angle between H and the order-parameter nodes. Within a semiclassical treatment of the extended quasiparticle states, we obtain fourfold oscillations of the specific heat, measurement of which provides a simpl...
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The vortex fluctuations have proved to be responsible for the onset of dissipation in thin type-II superconducting Aims. There is also growing evidence that dissipation in hightemperature superconductors exhibits the same kind of two-dimensional (2D) behavior. However, a proper analysis of these materials requires a thorough understanding of the two-dimensional fluctuations. This thesis may be ...
متن کاملFERMIONIC ENTROPY of the VORTEX STATE in d-WAVE SUPERCONDUCTORS.
In the d-wave superconductors the electronic entropy associated with an isolated vortex diverges logarithmically with the size of the system even at low temperature. In the vortex array the entropy per vortex per layer, S V , is essentially larger than k B and depends on the distribution of the velocity field v s around the vortex. If there is a first order transition with the change of the vel...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.92.157001