dc.creatorBravo, Bárbara
dc.creatorCabra, Daniel Carlos
dc.creatorGómez Albarracín, Flavia Alejandra
dc.creatorRossini, Gerardo Luis
dc.date2017-08
dc.date2020-06-26T17:35:48Z
dc.date.accessioned2023-07-14T19:59:48Z
dc.date.available2023-07-14T19:59:48Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/99301
dc.identifierhttps://ri.conicet.gov.ar/11336/63636
dc.identifierhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.054441
dc.identifierhttps://arxiv.org/abs/1704.03420
dc.identifierissn:2469-9969
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7437503
dc.descriptionWe study the role of long-range dipolar interactions on antiferromagnetic spin chains, from the classical S → ∞ limit to the deep quantum case S = 1/2 , including a transverse magnetic field. To this end, we combine different techniques such as classical energy minima, classical Monte Carlo, linear spin waves, bosonization, and density matrix renormalization group (DMRG). We find a phase transition from the already reported dipolar ferromagnetic region to an antiferromagnetic region for high enough antiferromagnetic exchange. Thermal and quantum fluctuations destabilize the classical order before reaching magnetic saturation in both phases, and also close to zero field in the antiferromagnetic phase. In the extreme quantum limit S = 1/2 , extensive DMRG computations show that the main phases remain present with transition lines to saturation significatively shifted to lower fields, in agreement with the bosonization analysis. The overall picture maintains a close analogy with the phase diagram of the anisotropic XXZ spin chain in a transverse field.
dc.descriptionInstituto de Física La Plata
dc.formatapplication/pdf
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectFísica
dc.subjectMagnetism
dc.subjectLong range
dc.subjectDipolar interaction
dc.titleLong-range interactions in antiferromagnetic quantum spin chains
dc.typeArticulo
dc.typePreprint


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