Magnetization and energy dynamics in spin ladders: Evidence of diffusion in time, frequency, position, and momentum
DC Element | Wert | Sprache |
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dc.contributor.author | Richter, Jonas | |
dc.contributor.author | Jin, Fengping | |
dc.contributor.author | Knipschild, Lars | |
dc.contributor.author | Herbrych, Jacek | |
dc.contributor.author | De Raedt, Hans | |
dc.contributor.author | Michielsen, Kristel | |
dc.contributor.author | Gemmer, Jochen | |
dc.contributor.author | Steinigeweg, Robin | |
dc.date.accessioned | 2021-12-23T16:23:21Z | - |
dc.date.available | 2021-12-23T16:23:21Z | - |
dc.date.issued | 2019 | |
dc.identifier.issn | 24699950 | |
dc.identifier.uri | https://osnascholar.ub.uni-osnabrueck.de/handle/unios/14508 | - |
dc.description.abstract | The dynamics of magnetization and energy densities are studied in the two-leg spin-1/2 ladder. Using an efficient pure-state approach based on the concept of typicality, we calculate spatiotemporal correlation functions for large systems with up to 40 lattice sites. In addition, two subsequent Fourier transforms from real to momentum space as well as from the time to frequency domain yield the respective dynamical structure factors. Summarizing our main results, we unveil the existence of genuine diffusion for both spin and energy. In particular, this finding is based on four distinct signatures which can all be equally well detected: (i) Gaussian density profiles, (ii) time-independent diffusion coefficients, (iii) exponentially decaying density modes, and (iv) Lorentzian line shapes of the dynamical structure factor. The combination of (i)-(iv) provides a comprehensive picture of high-temperature dynamics in this archetypal nonintegrable quantum model. | |
dc.description.sponsorship | Deutsche Forschungsgemeinschaft (DFG) within the DFG Research Unit FOR 2692German Research Foundation (DFG) [397107022 (GE 1657/3-1), 397067869 (STE 2243/3-1), 355031190]; U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering DivisionUnited States Department of Energy (DOE); This work has been funded by the Deutsche Forschungsgemeinschaft (DFG) - Grants No. 397107022 (GE 1657/3-1), No. 397067869 (STE 2243/3-1), No. 355031190 - within the DFG Research Unit FOR 2692. Additionally, we gratefully acknowledge the computing time granted by the JARA-HPC Vergabegremium and provided on the JARA-HPC Partition of the supercomputer JUWELS at Forschungszentrum Julich. J.H. was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. | |
dc.language.iso | en | |
dc.publisher | AMER PHYSICAL SOC | |
dc.relation.ispartof | PHYSICAL REVIEW B | |
dc.subject | CHAIN | |
dc.subject | CHAOS | |
dc.subject | Materials Science | |
dc.subject | Materials Science, Multidisciplinary | |
dc.subject | Physics | |
dc.subject | Physics, Applied | |
dc.subject | Physics, Condensed Matter | |
dc.subject | QUANTUM | |
dc.subject | STATISTICAL-MECHANICS | |
dc.subject | THERMAL-CONDUCTIVITY | |
dc.subject | TRANSPORT | |
dc.title | Magnetization and energy dynamics in spin ladders: Evidence of diffusion in time, frequency, position, and momentum | |
dc.type | journal article | |
dc.identifier.doi | 10.1103/PhysRevB.99.144422 | |
dc.identifier.isi | ISI:000466385900005 | |
dc.description.volume | 99 | |
dc.description.issue | 14 | |
dc.contributor.orcid | 0000-0001-9860-2146 | |
dc.contributor.orcid | 0000-0003-0608-0884 | |
dc.contributor.orcid | 0000-0003-2184-5275 | |
dc.contributor.researcherid | C-9541-2013 | |
dc.contributor.researcherid | AAS-6749-2020 | |
dc.contributor.researcherid | A-5205-2009 | |
dc.contributor.researcherid | W-7033-2019 | |
dc.identifier.eissn | 24699969 | |
dc.publisher.place | ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA | |
dcterms.isPartOf.abbreviation | Phys. Rev. B | |
dcterms.oaStatus | Green Published, hybrid, Green Submitted | |
crisitem.author.dept | FB 04 - Physik | - |
crisitem.author.deptid | fb04 | - |
crisitem.author.orcid | 0000-0003-0608-0884 | - |
crisitem.author.parentorg | Universität Osnabrück | - |
crisitem.author.netid | GeJo743 | - |
crisitem.author.netid | StRo766 | - |
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geprüft am 02.06.2024