Magnetic Response in Anyon Fluid at High Temperature

Abstract

The magnetic response of the charged anyon fluid at temperatures lower and larger than the fermion enery gap ${\omega }_c$ is investigated in the self-consistent field approximation. We prove that the anyon system with boundaries exhibits a total Meissner effect at temperatures smaller than the fermion energy gap ($T\ll {\omega }_c$). The London penetration length at $T$ $\sim 200K$ is of the order $\lambda \sim 10^{-5}cm$. At $T\gg {\omega }_c$ a new phase, characterized by an inhomogeneous magnetic penetration, is found. We conclude that the energy gap, ${\omega }_c,$ defines a scale that separates two phases: a superconducting phase at $T\ll {\omega }_c$, and a non-superconducting one at $T\gg {\omega }_c$.

arXiv comment7 pages, Talk presented at SILAFAE'98. April 8-11, 1998, San Juan, Puerto Rico