Hysteretic behavior and evidence for domain formation in a double-layer quantum Hall system at total filling factor 2

Details Hysteretic behavior and evidence for domain formation in a double-layer quantum Hall system at total filling factor 2 Hysteretic behavior and evidence for domain formation in a double-layer quantum Hall system at total filling factor 2

1998-04-23

arxiv.org/abs/cond-mat/9804256v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 4 figures, uses rotating, uses epsfig

Scientific paper

We report anomalous behavior in a double-layer two dimensional hole gas (2DHG) at even integer filling factors which includes hysteresis in the longitudinal and Hall resistances and a very weak temperature dependence of the resistance minima. All anomalies disappear and the conventional quantum Hall effect behavior recovers when a thin metal film is placed on top of the 2DHG. The behavior is attributed to presence of the theoretically predicted magnetic ordering at even integer filling factors which causes the formation of macroscopic spin-charge domains.

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