Extended universal finite-T renormalization of excitations in a class of one-dimensional quantum magnets.
Abstract
Temperature dependencies of gap energies and magnon lifetimes are measured in the quasi-one-dimensional S=1/2 gapped quantum magnets (CH{sub 3}){sub 2}CHNH{sub 3}CuCL{sub 3} (IPA-CuCl{sub 3}, where IPA denotes isopropyl ammonium) and Cu{sub 2}Cl{sub 4} {center_dot} D{sub 8}C{sub 4}SO{sub 2} (Sul-Cu{sub 2}Cl{sub 4}) using inelastic neutron scattering. The results are compared to those found in literature for S=1 Haldane spin chain materials and to theoretical calculations for the O(3)- and O(N)- quantum nonlinear {delta}-models. It is found that when the T=0 energy gap {Delta} is used as the temperature scale, all experimental and theoretical curves are identical to within system-dependent but temperature-independent scaling factors of the order of unity. This quasi-universality extends over a surprising broad T range, at least up to {kappa}T {approx} 1.5{Delta}.
- Authors:
-
- ORNL
- CEA, Grenoble, France
- Kagoshima University, Kagoshima JAPAN
- National Institute of Standards and Technology (NIST)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 966389
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: 15; Journal ID: ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ENERGY GAP; MAGNETS; MAGNONS; NEUTRONS; RENORMALIZATION; SCATTERING; SPIN
Citation Formats
Zheludev, Andrey I, Garlea, Vasile O, Regnault, L. -P., Manaka, H., and Tswelik, A. Extended universal finite-T renormalization of excitations in a class of one-dimensional quantum magnets.. United States: N. p., 2008.
Web. doi:10.1103/PhysRevLett.100.157204.
Zheludev, Andrey I, Garlea, Vasile O, Regnault, L. -P., Manaka, H., & Tswelik, A. Extended universal finite-T renormalization of excitations in a class of one-dimensional quantum magnets.. United States. https://doi.org/10.1103/PhysRevLett.100.157204
Zheludev, Andrey I, Garlea, Vasile O, Regnault, L. -P., Manaka, H., and Tswelik, A. 2008.
"Extended universal finite-T renormalization of excitations in a class of one-dimensional quantum magnets.". United States. https://doi.org/10.1103/PhysRevLett.100.157204.
@article{osti_966389,
title = {Extended universal finite-T renormalization of excitations in a class of one-dimensional quantum magnets.},
author = {Zheludev, Andrey I and Garlea, Vasile O and Regnault, L. -P. and Manaka, H. and Tswelik, A.},
abstractNote = {Temperature dependencies of gap energies and magnon lifetimes are measured in the quasi-one-dimensional S=1/2 gapped quantum magnets (CH{sub 3}){sub 2}CHNH{sub 3}CuCL{sub 3} (IPA-CuCl{sub 3}, where IPA denotes isopropyl ammonium) and Cu{sub 2}Cl{sub 4} {center_dot} D{sub 8}C{sub 4}SO{sub 2} (Sul-Cu{sub 2}Cl{sub 4}) using inelastic neutron scattering. The results are compared to those found in literature for S=1 Haldane spin chain materials and to theoretical calculations for the O(3)- and O(N)- quantum nonlinear {delta}-models. It is found that when the T=0 energy gap {Delta} is used as the temperature scale, all experimental and theoretical curves are identical to within system-dependent but temperature-independent scaling factors of the order of unity. This quasi-universality extends over a surprising broad T range, at least up to {kappa}T {approx} 1.5{Delta}.},
doi = {10.1103/PhysRevLett.100.157204},
url = {https://www.osti.gov/biblio/966389},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 15,
volume = 100,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2008},
month = {Tue Jan 01 00:00:00 EST 2008}
}