dc.contributor.author | Rakhimov, Abdulla | |
dc.contributor.author | Mardonov, Shuhrat | |
dc.contributor.author | Sherman, Evgeny | |
dc.contributor.author | Schilling, Andreas | |
dc.date.accessioned | 2014-02-28T19:25:07Z | |
dc.date.available | 2014-02-28T19:25:07Z | |
dc.date.issued | 2012-11-07 | |
dc.identifier.citation | New Journal of Physics 14 : (2012) // 113010 | es |
dc.identifier.issn | 1367-2630 | |
dc.identifier.uri | http://hdl.handle.net/10810/11692 | |
dc.description | 15 p. | es |
dc.description.abstract | We study theoretically the effects of disorder on Bose-Einstein condensates (BEC) of bosonic triplon quasiparticles in doped dimerized quantum magnets. The condensation occurs in a magnetic field, where the concentration of bosons in the random potential is sufficient to form the condensate. The effect of doping is partly modeled by a delta-correlated distribution of impurities, which (i) leads to a uniform renormalization of the system parameters and (ii) produces disorder in the system with renormalized parameters. This approach can explain qualitatively the available magnetization data on the Tl1-xKxCuCl3 compound taken as an example. In addition to the magnetization, we found that the speed of the Bogoliubov mode has a maximum as a function of x. No evidence of the pure Bose glass phase has been found in the BEC regime. | es |
dc.description.sponsorship | The work was partly supported by the Schweizerische Nationalfonds zur Forderung der wissenschaftlichen Forschung under grants numbers IZK0Z2-139441 and no. 20-140465. The work of EYS was supported by the MICINN of Spain grant FIS 2009-12773-C02-01, 'Grupos Consolidados UPV/EHU del Gobierno Vasco' grant IT-472-10, and by the UPV/EHU under program UFI 11/55. We are indebted to H Tanaka for providing us with tabulated data for figure 2 | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing LTD | es |
dc.rights | info:eu-repo/semantics/openAccess | es |
dc.subject | Bose-Einstein condensation | es |
dc.subject | quasi-particles | es |
dc.subject | spin triplets | es |
dc.subject | localization | es |
dc.subject | system | es |
dc.subject | TL1-XKXCUCL3 | es |
dc.subject | transition | es |
dc.subject | gas | es |
dc.title | The effects of disorder in dimerized quantum magnets in mean field approximations | es |
dc.type | info:eu-repo/semantics/article | es |
dc.rights.holder | Content from this work may be used under the terms of the Creative Commons Attribution-NonCommercial-
ShareAlike 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title
of the work, journal citation and DOI.[© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft] | es |
dc.relation.publisherversion | http://iopscience.iop.org/1367-2630/14/11/113010/ | es |
dc.identifier.doi | 10.1088/1367-2630/14/11/113010 | |
dc.departamentoes | Química física | es_ES |
dc.departamentoeu | Kimika fisikoa | es_ES |
dc.subject.categoria | PHYSICS AND ASTRONOMY | |