Spin dynamics of the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2

J. S. Helton, K. Matan, M. P. Shores, E. A. Nytko, B. M. Bartlett, Y. Yoshida, Y. Takano, A. Suslov, Y. Qiu, Jaiho Chung, D. G. Nocera, Y. S. Lee

Research output: Contribution to journalArticle

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Abstract

We have performed thermodynamic and neutron scattering measurements on the S=1/2 kagomé lattice antiferromagnet ZnCu3(OH)6Cl2. The susceptibility indicates a Curie-Weiss temperature of θCW-300K; however, no magnetic order is observed down to 50 mK. Inelastic neutron scattering reveals a spectrum of low energy spin excitations with no observable gap down to 0.1 meV. The specific heat at low-T follows a power law temperature dependence. These results suggest that an unusual spin liquid state with essentially gapless excitations is realized in this kagomé lattice system.

Original languageEnglish
Article number107204
JournalPhysical Review Letters
Volume98
Issue number10
DOIs
Publication statusPublished - 2007 Mar 9
Externally publishedYes

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spin dynamics
neutron scattering
excitation
inelastic scattering
specific heat
magnetic permeability
thermodynamics
temperature dependence
liquids
scattering
temperature
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Helton, J. S., Matan, K., Shores, M. P., Nytko, E. A., Bartlett, B. M., Yoshida, Y., ... Lee, Y. S. (2007). Spin dynamics of the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2. Physical Review Letters, 98(10), [107204]. https://doi.org/10.1103/PhysRevLett.98.107204

Spin dynamics of the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2. / Helton, J. S.; Matan, K.; Shores, M. P.; Nytko, E. A.; Bartlett, B. M.; Yoshida, Y.; Takano, Y.; Suslov, A.; Qiu, Y.; Chung, Jaiho; Nocera, D. G.; Lee, Y. S.

In: Physical Review Letters, Vol. 98, No. 10, 107204, 09.03.2007.

Research output: Contribution to journalArticle

Helton, JS, Matan, K, Shores, MP, Nytko, EA, Bartlett, BM, Yoshida, Y, Takano, Y, Suslov, A, Qiu, Y, Chung, J, Nocera, DG & Lee, YS 2007, 'Spin dynamics of the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2', Physical Review Letters, vol. 98, no. 10, 107204. https://doi.org/10.1103/PhysRevLett.98.107204
Helton JS, Matan K, Shores MP, Nytko EA, Bartlett BM, Yoshida Y et al. Spin dynamics of the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2. Physical Review Letters. 2007 Mar 9;98(10). 107204. https://doi.org/10.1103/PhysRevLett.98.107204
Helton, J. S. ; Matan, K. ; Shores, M. P. ; Nytko, E. A. ; Bartlett, B. M. ; Yoshida, Y. ; Takano, Y. ; Suslov, A. ; Qiu, Y. ; Chung, Jaiho ; Nocera, D. G. ; Lee, Y. S. / Spin dynamics of the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2. In: Physical Review Letters. 2007 ; Vol. 98, No. 10.
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