Physics – Condensed Matter – Superconductivity
Scientific paper
2005-12-19
Phys. Rev. B vol. 73, 214507 (2006)
Physics
Condensed Matter
Superconductivity
Published version with an appendix showing that the claim in cond-mat/0510380 (and cond-mat/0606522) that Ohmic dissipation in
Scientific paper
10.1103/PhysRevB.73.214507
We consider the disordered quantum rotor model in the presence of a magnetic field. We analyze the transport properties in the vicinity of the multicritical point between the superconductor, phase glass and paramagnetic phases. We find that the magnetic field leaves metallic transport of bosons in the glassy phase in tact. In the vicinity of the vicinity of the superconductivity-to-Bose metal transition, the resistitivy turns on as $(H-H_c)^{2}$ with $H_c$. This functional form is in excellent agreement with the experimentally observed turn-on of the resistivity in the metallic state in MoGe, namely $R\approx R_c(H-H_c)^\mu$, $1<\mu<3$. The metallic state is also shown to presist in three spatial dimensions. In addition, we also show that the metallic state remains intact in the presence of Ohmic dissipation in spite of recent claims to the contrary. As the phase glass in $d=3$ is identical to the vortex glass, we conclude that the vortex glass is, in actuality, a metal rather than a superconductor at T=0. Our analysis unifies the recent experiments on vortex glass systems in which the linear resistivity remained non-zero below the putative vortex glass transition and the experiments on thin films in which a metallic phase has been observed to disrupt the direct transition from a superconductor to an insulator.
Phillips Philip
Wu Jiansheng
No associations
LandOfFree
Vortex Glass is a Metal: Unified Theory of the Magnetic Field and Disorder-Tuned Bose Metals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Vortex Glass is a Metal: Unified Theory of the Magnetic Field and Disorder-Tuned Bose Metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vortex Glass is a Metal: Unified Theory of the Magnetic Field and Disorder-Tuned Bose Metals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-281133