Files in this item
Energy transport in a disordered spin chain with broken U(1) symmetry : diffusion, subdiffusion, and many-body localization
Item metadata
dc.contributor.author | Schulz, Maximilian | |
dc.contributor.author | Taylor, Scott Richard | |
dc.contributor.author | Hooley, Christopher Andrew | |
dc.contributor.author | Scardicchio, Antonello | |
dc.date.accessioned | 2019-04-10T16:30:01Z | |
dc.date.available | 2019-04-10T16:30:01Z | |
dc.date.issued | 2018-11-05 | |
dc.identifier | 257972331 | |
dc.identifier | 555d0ea5-16c1-4dad-92e3-2762b64d0557 | |
dc.identifier | 85056266196 | |
dc.identifier | 000449293300001 | |
dc.identifier.citation | Schulz , M , Taylor , S R , Hooley , C A & Scardicchio , A 2018 , ' Energy transport in a disordered spin chain with broken U(1) symmetry : diffusion, subdiffusion, and many-body localization ' , Physical Review. B, Condensed matter and materials physics , vol. 98 , no. 18 , 180201(R) . https://doi.org/10.1103/PhysRevB.98.180201 | en |
dc.identifier.issn | 1098-0121 | |
dc.identifier.other | ORCID: /0000-0002-9976-2405/work/54818781 | |
dc.identifier.uri | https://hdl.handle.net/10023/17498 | |
dc.description | Funding: MS and SRT acknowledge financial support from the CM-CDT under EPSRC (UK) grants EP/G03673X/1 and EP/L015110/1. CAH acknowledges financial support from the TOPNES programme under EPSRC (UK) grant number EP/I031014/1. | en |
dc.description.abstract | We explore the physics of the disordered XYZ spin chain using two complementary numerical techniques: exact diagonalization (ED) on chains of up to 17 spins, and time-evolving block decimation (TEBD) on chains of up to 400 spins. Our principal findings are as follows. First, we verify that the clean XYZ spin chain shows ballistic energy transport for all parameter values that we investigated. Second, for weak disorder there is a stable diffusive region that persists up to a critical disorder strength that depends on the XY anisotropy. Third, for disorder strengths above this critical value, energy transport becomes increasingly subdiffusive. Fourth, the many-body localization transition moves to significantly higher disorder strengths as the XY anisotropy is increased. We discuss these results, and their relation to our current physical picture of subdiffusion in the approach to many-body localization. | |
dc.format.extent | 10 | |
dc.format.extent | 1466744 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review. B, Condensed matter and materials physics | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.title | Energy transport in a disordered spin chain with broken U(1) symmetry : diffusion, subdiffusion, and many-body localization | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. Centre for Designer Quantum Materials | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1103/PhysRevB.98.180201 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | https://arxiv.org/abs/1805.01036 | en |
dc.identifier.grantnumber | EP/I031014/1 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.