Magnetic field induced finite-size effect in type-II superconductors
نویسندگان
چکیده
منابع مشابه
Low-magnetic-field critical behavior in strongly type-II superconductors.
A new description is proposed for the low-field critical behavior of type-II superconductors. The starting point is the Ginzburg-Landau theory in presence of an external magnetic field H. A set of fictitious vortex variables and a singular gauge transformation are used to rewrite a finite H Ginzburg-Landau functional in terms of a complex scalar field of zero average vorticity. The continuum li...
متن کاملField-induced quasiparticle excitations in novel type II superconductors
We show that the field dependence of the magnetic penetration depth (λ), for which muon spin rotation (μSR) is an excellent microscopic probe, provides useful information on the degree of anisotropy for the superconducting order parameter. In type II superconductors associated with anisotropic order parameters, λ is sensitive to the quasiparticle excitation induced by the Doppler shift due to a...
متن کاملMagnetic field induced 3D to 1D crossover in type II superconductors
We review and analyze magnetization and specific heat investigations on type-II superconductors which uncover remarkable evidence for the magnetic field induced finite size effect and the associated 3D to 1D crossover which enhances thermal fluctuations. Indeed, the correlation length transverse to the magnetic field Hi, applied along the i-axis, cannot grow beyond the limiting magnetic length ...
متن کاملMagnetic relaxation in hard type-II superconductors
– Magnetic relaxation in a type-II superconductor is simulated for a range of temperatures T in a simple model of 2D Josephson junction array (JJA) with finite screening. The high-T phase, that is characterised by a single time scale τα, crosses over to an intermediate phase at a lower temperature Tcr wherein a second time scale τβ ≪τα emerges. The relaxation in the time window set by τβ follow...
متن کاملThe Effects of Magnetic Field in Lattice Periodic Hamiltonians and Vortices in Type Ii Superconductors
The motivation for this project was it to serve as a starting point to study vortices in Iron based superconductors. Thus, this project had two main goals. First, two understand the effects of the magnetic field in the sense that the presence of the vector potential in the Hamiltonian, breaks translational symmetry.Then it is crucial to understand it to still take advantage of the symmetries an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Low Temperature Physics
سال: 2006
ISSN: 1063-777X,1090-6517
DOI: 10.1063/1.2199441