Effect of pressure on the quantum spin ladder material IPA-CuCl3.
Journal Article
·
· Physical Review B
- ORNL
- Kagoshima University, Kagoshima JAPAN
- National Institute of Standards and Technology (NIST)
Inelastic-neutron-scattering and bulk magnetic-susceptibility studies of the quantum S = 1/2 spin ladder system (CH{sub 3}){sub 2}CHNH{sub 3}CuCl{sub 3} are performed under hydrostatic pressure. The pressure dependence of the spin gap {Delta} is determined. At P = 1500 MPa it is reduced to {Delta} =0.79 meV from {Delta} =1.17 meV at ambient pressure. The results allow us to predict a soft-mode quantum phase transition in this system at P{sub c} {approx} 4 GPa. The measurements are complicated by the proximity of a structural phase transition that leads to a deterioration of the sample.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 945347
- Journal Information:
- Physical Review B, Vol. 78, Issue 22
- Country of Publication:
- United States
- Language:
- English
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