Quantum Critical Behavior of the Cluster Glass Phase
| dc.creator | Case, Matthew J. | |
| dc.creator | Dobrosavljevic, V. | |
| dc.date | 2006-12-06 | |
| dc.date | 2007-10-22 | |
| dc.date.accessioned | 2026-07-07T08:37:24Z | |
| dc.date.available | 2026-07-07T08:37:24Z | |
| dc.description | In disordered itinerant magnets with arbitrary symmetry of the order parameter, the conventional quantum critical point between the ordered phase and the paramagnetic Fermi-liquid (PMFL) is destroyed due to the formation of an intervening cluster glass (CG) phase. In this Letter we discuss the quantum critical behavior at the CG-PMFL transition for systems with continuous symmetry. We show that fluctuations due to quantum Griffiths anomalies induce a first-order transition from the PMFL at T=0, while at higher temperatures a conventional continuous transition is restored. This behavior is a generic consequence of enhanced non-Ohmic dissipation caused by a broad distribution of energy scales within any quantum Griffiths phase in itinerant systems. | |
| dc.description | v1: 4+epsilon pages, 2 figures; v2: 4 pages, 1 figure, improved discussion, version accepted to PRL | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0612127 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0612127 | |
| dc.identifier | Phys. Rev. Lett. 99, 147204 (2007) | |
| dc.identifier | doi:10.1103/PhysRevLett.99.147204 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/140386 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Quantum Critical Behavior of the Cluster Glass Phase | |
| dc.type | text |