NMR relaxation in the spin-1 Heisenberg chain
Journal Article
·
· Physical Review. B
- Université de Toulouse, CNRS, UPS (France); Boston Univ., MA (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Université de Toulouse, CNRS, UPS (France); Boston Univ., MA (United States)
- Boston Univ., MA (United States); Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Laboratory for Condensed Matter Physics and Inst. of Physics
- Nanyang Technological Univ. (Singapore)
For this research, we consider the isotropic S = 1 Heisenberg chain with a finite Haldane gap Δ and use state-of-the-art numerical techniques to investigate its dynamical properties at finite temperature, focusing on the nuclear spin-lattice relaxation rate 1/T1 measured in nuclear magnetic resonance (NMR) experiments, for instance. In particular, we analyze the contributions from modes with momenta close to q ≈ 0 and q ≈ π as a function of temperature. At higherature we observe spin diffusion, while at lowerature we argue that a simple activated behavior 1/T1 exp (-Δ/T) can be observed only at temperatures much smaller than the gap Δ.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF); Ministry of Education, Singapore; GENCI
- Grant/Contract Number:
- AC02-05CH11231; DMR-1710170; MOE2015-T1-001-0056; x2016050225; x2017050225; ANR-14-CE32-0018; ANR-11-IDEX-0002-02
- OSTI ID:
- 1580924
- Alternate ID(s):
- OSTI ID: 1560769
- Journal Information:
- Physical Review. B, Vol. 100, Issue 9; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 10 works
Citation information provided by
Web of Science
Web of Science
Magnetization dynamics in clean and disordered spin-1 XXZ chains
|
journal | October 2019 |
Decay of spin-spin correlations in disordered quantum and classical spin chains
|
journal | February 2020 |
Magnetization dynamics in clean and disordered spin-1 XXZ chains | text | January 2019 |
Universal spin dynamics in infinite-temperature one-dimensional quantum magnets | text | January 2019 |
Superdiffusion in spin chains | text | January 2021 |
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