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복잡계 이론물리 연구단
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Spin Order and Phase Transitions in Chains of Polariton Condensates

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Title
Spin Order and Phase Transitions in Chains of Polariton Condensates
Author(s)
H. Ohadi; A. J. Ramsay; H. Sigurdsson; Y. del Valle-Inclan Redondo; S. I. Tsintzos; Z. Hatzopoulos; T. C. H. Liew; I. A. Shelykh; Y. G. Rubo; P. G. Savvidis; J. J. Baumberg
Publication Date
2017-08
Journal
PHYSICAL REVIEW LETTERS, v.119, no.6, pp.067401 -
Publisher
AMER PHYSICAL SOC
Abstract
We demonstrate that multiply coupled spinor polariton condensates can be optically tuned through a sequence of spin-ordered phases by changing the coupling strength between nearest neighbors. For closed four-condensate chains these phases span from ferromagnetic (FM) to antiferromagnetic (AFM), separated by an unexpected crossover phase. This crossover phase is composed of alternating FM-AFM bonds. For larger eight-condensate chains, we show the critical role of spatial inhomogeneities and demonstrate a scheme to overcome them and prepare any desired spin state. Our observations thus demonstrate a fully controllable nonequilibrium spin lattice. © 2017 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/3800
DOI
0.1103/PhysRevLett.119.067401
ISSN
0031-9007
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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