TY - JOUR
T1 - Muon-spin rotation measurements of the magnetic field dependence of the vortex-core radius and magnetic penetration depth in NbSe2
AU - Sonier, J. E.
AU - Kiefl, R. F.
AU - Brewer, J. H.
AU - Chakhalian, J.
AU - Dunsiger, S. R.
AU - Mac Farlane, W. A.
AU - Miller, R. I.
AU - Wong, A.
AU - Luke, G. M.
AU - Brill, J. W.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - Muon-spin rotation spectroscopy (μ SR) has been used to measure the internal magnetic field distribution in NbSe2 for Hc1 ≪ H < 0.25Hc2. The deduced profiles of the supercurrent density Js indicate that the vortex-core radius ρ0 in the bulk decreases sharply with increasing magnetic field. This effect, which is attributed to increased vortex-vortex interactions, does not agree with the dirty-limit microscopic theory. A simple phenomenological equation in which ρ0 depends on the intervortex spacing is used to model this behavior. In addition, we find for the first time that the in-plane magnetic penetration depth λab increases linearly with H in the vortex state of a conventional superconductor. 1997
AB - Muon-spin rotation spectroscopy (μ SR) has been used to measure the internal magnetic field distribution in NbSe2 for Hc1 ≪ H < 0.25Hc2. The deduced profiles of the supercurrent density Js indicate that the vortex-core radius ρ0 in the bulk decreases sharply with increasing magnetic field. This effect, which is attributed to increased vortex-vortex interactions, does not agree with the dirty-limit microscopic theory. A simple phenomenological equation in which ρ0 depends on the intervortex spacing is used to model this behavior. In addition, we find for the first time that the in-plane magnetic penetration depth λab increases linearly with H in the vortex state of a conventional superconductor. 1997
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U2 - 10.1103/PhysRevLett.79.1742
DO - 10.1103/PhysRevLett.79.1742
M3 - Article
AN - SCOPUS:0031232650
SN - 0031-9007
VL - 79
SP - 1742
EP - 1745
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
ER -