منابع مشابه
Vortex lattice pinning in high-temperature superconductors
Vortex matter in high temperature superconductors has many peculiar properties such as melting of the vortex lattice, creation of new vortex-liquid phases etc. These effects are not seen in conventional superconductors. This is mainly due to the fact that HTc compounds are strongly type two superconductors with Ginzburg-Landau ratio up to ~110 that makes thermal and quantum fluctuations more pr...
متن کاملMagnetism and high Tc superconductors
The magnetic properties of the copper oxide planes in hight T~ superconductors are represented by a planar 2-d antiferromagnet on a square lattice. We model the magnetic effect of the addition of holes through doping by the replacement of antiferromagnetic with ferromagnetic plaquettes thereby facilitating the creation of vorticeslantivortices. These magnetic
متن کاملElectron Pairing in High-Tc Superconductors
In high-Tc cuprate superconductors, the pairing state of electrons is still spin-singlet, as in conventional BCS superconductors. But the orbital part of the wavefunction, order parameter or gap function, has a dx2−y2 symmetry, rather than the isotropic s-wave symmetry. This exotic symmetry has been confirmed by various experiments, especially the phase-sensitive ones. But the underlying mechan...
متن کاملSpin dynamics in high-TC superconductors
Key features of antiferromagnetic dynamical correlations in highTC superconductors cuprates are discussed. In underdoped regime, the sharp resonance peak, occuring exclusively in the SC state, is accompanied by a broader contribution located around ∼ 30 meV which remains above TC . Their interplay may induce incommensurate structure in the superconducting state.
متن کاملOxygen Disorder Effects in High Tc Superconductors
It is now well established that oxygen plays a crucial role in the structural, magnetic and transport properties of high Tc materials. We present here a brief review of the effect of the oxygen deficiency and vacancy ordering on the superconducting and magnetic properties of various superconductors.
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ژورنال
عنوان ژورنال: Active and Passive Electronic Components
سال: 1993
ISSN: 0882-7516,1563-5031
DOI: 10.1155/1993/45791