dc.contributor.author | Kartashov, Yaroslav | |
dc.contributor.author | Sherman, Evgeny | |
dc.contributor.author | Malomed, Boris | |
dc.contributor.author | Konotop, V. V. | |
dc.date.accessioned | 2021-02-17T09:50:11Z | |
dc.date.available | 2021-02-17T09:50:11Z | |
dc.date.issued | 2020-10-08 | |
dc.identifier.citation | New Journal Of Physics 22(10) : (2020) // Article ID 103014 | es_ES |
dc.identifier.issn | 1367-2630 | |
dc.identifier.uri | http://hdl.handle.net/10810/50198 | |
dc.description.abstract | We show that attractive two-dimensional (2D) spinor Bose-Einstein condensates with helicoidal spatially periodic spin-orbit coupling (SOC) support a rich variety of stable fundamental solitons and bound soliton complexes. Such states exist with chemical potentials belonging to the semi-infinite gap in the band spectrum created by the periodically modulated SOC. All these states exist above a certain threshold value of the norm. The chemical potential of fundamental solitons attains the bottom of the lowest band, whose locus is a ring in the space of Bloch momenta, and the radius of the non-monotonous function of the SOC strength. The chemical potential of soliton complexes does not attain the band edge. The complexes are bound states of several out-of-phase fundamental solitons whose centers are placed at local maxima of the SOC-modulation phase. In this sense, the impact of the helicoidal SOC landscape on the solitons is similar to that of a periodic 2D potential. In particular, it can compensate repulsive forces between out-of-phase solitons, making their bound states stable. Extended stability domains are found for complexes built of two and four solitons (dipoles and quadrupoles, respectively). They are typically stable below a critical value of the chemical potential. | es_ES |
dc.description.sponsorship | BAM is supported, in part, by the Israel Science Foundation through Grant No. 1286/17, and by Grant No. 2015616 from the joint program of Binational Science Foundation (US-Israel) and National Science Foundation (US). VVK acknowledges financial support from the Portuguese Foundation for Science and Technology (FCT) under Contract no. UIDB/00618/2020. EYS acknowledge support by the Spanish Ministry of Science and the European Regional Development Fund through PGC2018-101355-B-I00 (MCIU/AEI/ FEDER, UE) and the Basque Country Government through Grant No. IT986-16. This work was partially supported by the program 1.4 of Presidium of RAS 'Topical problems of low temperature physics'. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | IOP Publishing | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICIU/PGC2018-101355-B-I00 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | solitons | es_ES |
dc.subject | matter waves | es_ES |
dc.subject | spin-orbit coupling | es_ES |
dc.subject | quantum gases | es_ES |
dc.subject | vortex solitons | es_ES |
dc.subject | droplets | es_ES |
dc.title | Stable Two-Dimensional Soliton Complexes in Bose-Einstein Condensates with Helicoidal Spin-Orbit Coupling | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. (CC BY 4.0) | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://iopscience-iop-org.ehu.idm.oclc.org/article/10.1088/1367-2630/abb911 | es_ES |
dc.identifier.doi | 10.1088/1367-2630/abb911 | |
dc.departamentoes | Química física | es_ES |
dc.departamentoeu | Kimika fisikoa | es_ES |