Anderson transition in three-dimensional disordered systems with symplectic symmetry

Details Anderson transition in three-dimensional disordered systems with symplectic symmetry Anderson transition in three-dimensional disordered systems with symplectic symmetry

1996-09-24

arxiv.org/abs/cond-mat/9609226v1

Phys. Rev. Lett. vol. 77 (1996) 3593

Physics

Condensed Matter

4 pages, revtex, to appear in Physical Review Letters. 3 figures available on request either by fax or normal mail from tkaw

Scientific paper

10.1103/PhysRevLett.77.3593

The Anderson transition in a 3D system with symplectic symmetry is investigated numerically. From a one-parameter scaling analysis the critical exponent $\nu$ of the localization length is extracted and estimated to be $\nu = 1.3 \pm 0.2$. The level statistics at the critical point are also analyzed and shown to be scale independent. The form of the energy level spacing distribution $P(s)$ at the critical point is found to be different from that for the orthogonal ensemble suggesting that the breaking of spin rotation symmetry is relevant at the critical point.

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