| dc.creator | Rosales, Héctor Diego | |
| dc.creator | Arlego, Marcelo José Fabián | |
| dc.creator | Gómez Albarracín, Flavia Alejandra | |
| dc.date | 2014-08 | |
| dc.date | 2014-12-08 | |
| dc.date | 2019-11-11T16:13:41Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/85327 | |
| dc.identifier | issn:1742-6588 | |
| dc.description | We study the ground state phase diagram of a frustrated spin-1/2 four-leg tube in an external magnetic field. We explore the parameter space of this model in the regime of all-antiferromagnetic exchange couplings by means of three different approaches: density matrix renormalization group (DMRG), a low-energy effective Hamiltonian (LEH) and a Hartree variational approach (HVA). We find that in the limit of weakly interacting plaquettes, singlet and triplet states play an important role in the formation of magnetization plateaux. We study the transition regions numerically and analytically, and find that they are described, at first order in a strong- coupling expansion, by an XXZ spin-1/2 chain in a magnetic field. These results are consistent with the DMRG and HVA calculations. | |
| dc.description | Publicado en <i>Journal of Physics: conference series</i> vol. 568 | |
| dc.description | Instituto de Física La Plata | |
| dc.format | application/pdf | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Física | |
| dc.subject | Antiferromagnetic exchange | |
| dc.subject | Magnetization plateaux | |
| dc.subject | Magnetic fields | |
| dc.title | Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields | |
| dc.type | Objeto de conferencia | |
| dc.type | Objeto de conferencia | |
