ISSN:
1090-6487
Keywords:
75.70.Cn
;
75.10.−b
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The phase diagram of a bilayer heterostructure at integer filling factors was established using the hidden symmetry method. Three phases, namely, ferromagnetic, canted antiferromagnetic (CAP), and spin-singlet, were found. We confirm early results of Das Sarma et al. Each phase violates the SU(4) hidden symmetry and is stabilized by anisotropy interactions. A charged excitation in the bilayer, i.e., a skyrmion, was found and its anisotropic energy gap was calculated. The gap has a prominent minimum in the CAP.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.568348
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