Quantum spin glass transition in the two-dimensional electron gas

Details Quantum spin glass transition in the two-dimensional electron gas Quantum spin glass transition in the two-dimensional electron gas

2001-09-18

arxiv.org/abs/cond-mat/0109309v3

Pramana 58, 285 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 2 figures; to appear in a special issue of Pramana, published by the Indian Academy of Sciences, in honor of Professo

Scientific paper

10.1007/s12043-002-0014-0

We discuss the possibility of spin glass order in the vicinity of the unexpected metallic state of the two-dimensional electron gas in zero applied magnetic field. An average ferromagnetic moment may also be present, and the spin glass order then resides in the plane orthogonal to the ferromagnetic moment. We argue that a quantum transition involving the destruction of the spin glass order in an applied in-plane magnetic field offers a natural explanation of some features of recent magnetoconductance measurements. We present a quantum field theory for such a transition and compute its mean field properties.

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