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

V.I. Fal’ko^a, S.V. Iordanskii^b, A.B. Kashuba^b
^aLancaster University, Bailrigg, Lancaster, United Kingdom
^bL.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation

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.

PACS: 73.43.−f, 73.43.Cd, 71.70.−d (all)
DOI: 10.1070/1063-7869/44/10S/S09
URL: https://ufn.ru/en/articles/2001/13/i/
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)

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@article{Fal’ko:2001,
	author = {V. I. Fal’ko and S. V. Iordanskii and A. B. Kashuba},
	title = {Hidden $\mathrm{SU(4)}$ symmetry in bilayer quantum well at integer filling factors},
	publisher = {Physics-Uspekhi},
	year = {2001},
	journal = {Phys. Usp.},
	volume = {44},
	number = {13},
	pages = {49-53},
	url = {https://ufn.ru/en/articles/2001/13/i/},
	doi = {10.1070/1063-7869/44/10S/S09}
}

Оригинал: 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); DOI: 10.1070/1063-7869/44/10S/S09