Quantum Ferromagnetism and Phase Transitions in Double-Layer Quantum Hall Systems

1993/10/28 by Kun Yang, Kyungsun Moon, K. Moon +7 · 18 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat

paper · pdf · doi:10.1103/physrevlett.72.732

4 pages, REVTEX 3.0, IUCM93-013, 1 FIGURE, hardcopy available from: [email protected]

arxiv created 1993/10/28 · openalex publication_date 1994/01/31 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Double layer quantum Hall systems have interesting properties associated with interlayer correlations. At ν=1/m where m is an odd integer they exhibit spontaneous symmetry breaking equivalent to that of spin 1/2 easy-plane ferromagnets, with the layer degree of freedom playing the role of spin. We explore the rich variety of quantum and finite temperature phase transitions in these systems. In particular, we show that a magnetic field oriented parallel to the layers induces a highly collective commensurate-incommensurate phase transition in the magnetic order.

Citations

• Commensurate phases, incommensurate phases and the devil's staircase

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