Hidden $\mathrm{SU(4)}$ symmetry in bilayer quantum well at integer filling factors

V.I. Fal’ko^а, S.V. Iordanskii^б, A.B. Kashuba^б
^аLancaster University, Bailrigg, Lancaster, United Kingdom
^бИнститут теоретической физики им. Л.Д. Ландау, просп. Акад. Семенова 1а, Черноголовка, Московская обл., Ногинский р-н, 142432, Российская Федерация

Phase diagram of a bilayer quantum well at integer filling factors is established using the hidden symmetry method. Three phases: ferromagnetic, canted antiferromagnetic (CAP) and spin-singlet, have been found. We confirm early results of Das Sarma et al. Each phase violates the $\mathrm{SU(4)}$ hidden symmetry and is stabilized by the anisotropy interactions.

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English fulltext is available at DOI: 10.1070/1063-7869/44/10S/S09

PACS: 73.43.−f, 73.43.Cd, 71.70.−d (все)
DOI: 10.1070/1063-7869/44/10S/S09
URL: https://ufn.ru/ru/articles/2001/13/i/
Цитата: Fal’ko V I, Iordanskii S V, Kashuba A B "Hidden $\mathrm{SU(4)}$ symmetry in bilayer quantum well at integer filling factors" УФН 171 49–53 (2001)

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English citation: Fal’ko V I, Iordanskii S V, Kashuba A B “Hidden $\mathrm{SU(4)}$ symmetry in bilayer quantum well at integer filling factors” Phys. Usp. 44 49–53 (2001); DOI: 10.1070/1063-7869/44/10S/S09