About low field memory and negative magnetization in semiconductors and polymers

Details About low field memory and negative magnetization in semiconductors and polymers About low field memory and negative magnetization in semiconductors and polymers

2005-09-28

arxiv.org/abs/cond-mat/0509712v1

Phys. Rev. B72 (2005) No. 15

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, no figures

Scientific paper

10.1103/PhysRevB.72.155203

Ginzburg-Landau bulk magnetization of itinerant electrons can provide a negative effective field in the Weiss model by coupling to localized magnetic moments. The coupling enforces remnant magnetization, which can be negative or positive depending on the sample magnetic history. Stable magnetic susceptibility of coupled nonequilibrium subsystems with magnetization reversal is always positive. Gauss-scale fields could be expected for switching between negative and positive remnant moments in semiconductors with coupling at ambient temperatures. Negative magnetization in ultra-high conducting polymers is also discussed within the developed framework.

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