dc.creator | Mukhopadhyay, S. | |
dc.creator | Klanjsek, M. | |
dc.creator | Grbic, M. S. | |
dc.creator | Blinder, R. | |
dc.creator | Mayaffre, H. | |
dc.creator | Berthier, C. | |
dc.creator | Horvatic, M. | |
dc.creator | Continentino, M. A. | |
dc.creator | Paduan Filho, Armando | |
dc.creator | Chiari, B. | |
dc.creator | Piovesana, O. | |
dc.date.accessioned | 2013-10-29T12:21:13Z | |
dc.date.accessioned | 2018-07-04T16:02:29Z | |
dc.date.available | 2013-10-29T12:21:13Z | |
dc.date.available | 2018-07-04T16:02:29Z | |
dc.date.created | 2013-10-29T12:21:13Z | |
dc.date.issued | 2012 | |
dc.identifier | PHYSICAL REVIEW LETTERS, COLLEGE PK, v. 109, n. 17, supl. 1, Part 1, pp. 4051-4058, OCT 26, 2012 | |
dc.identifier | 0031-9007 | |
dc.identifier | http://www.producao.usp.br/handle/BDPI/36208 | |
dc.identifier | 10.1103/PhysRevLett.109.177206 | |
dc.identifier | http://dx.doi.org/10.1103/PhysRevLett.109.177206 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1630817 | |
dc.description.abstract | By means of nuclear spin-lattice relaxation rate T-1(-1), we follow the spin dynamics as a function of the applied magnetic field in two gapped quasi-one-dimensional quantum antiferromagnets: the anisotropic spin-chain system NiCl2-4SC(NH2)(2) and the spin-ladder system (C5H12N)(2)CuBr4. In both systems, spin excitations are confirmed to evolve from magnons in the gapped state to spinons in the gapless Tomonaga-Luttinger-liquid state. In between, T-1(-1) exhibits a pronounced, continuous variation, which is shown to scale in accordance with quantum criticality. We extract the critical exponent for T-1(-1), compare it to the theory, and show that this behavior is identical in both studied systems, thus demonstrating the universality of quantum-critical behavior. | |
dc.language | eng | |
dc.publisher | AMER PHYSICAL SOC | |
dc.publisher | COLLEGE PK | |
dc.relation | PHYSICAL REVIEW LETTERS | |
dc.rights | Copyright AMER PHYSICAL SOC | |
dc.rights | openAccess | |
dc.title | Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets | |
dc.type | Artículos de revistas | |