Artículos de revistas
Field distribution and flux-line depinning in MgB2
Registro en:
Physical Review Letters. American Physical Soc, v. 89, n. 8, 2002.
0031-9007
WOS:000177338700053
10.1103/PhysRevLett.89.087602
Autor
Urbano, RR
Pagliuso, PG
Rettori, C
Kopelevich, Y
Moreno, NO
Sarrao, JL
Institución
Resumen
We report the first observation of the field distribution and flux-line lattice (FLL) depinning in the vortex-state (VS) of a type-II superconductor probed by conduction electron spin resonance (CESR). CESR was performed in MgB (2) (T(c)similar or equal to39 K) at 4.1 GHz (1455 Oe) and 9.5 GHz (3390 Oe). The field distribution, n(H), and a standard deviation of sigmasimilar to14 Oe (at 28 K/4.1 GHz and at 7 K/9.5 GHz) were inferred, respectively, from the distortion and broadening of the CESR in the VS. For both frequencies, the FLL depinning temperature was determined. 89 8