Effect of pressure on the quantum spin ladder material IPA-CuCl3.

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.78.224409· OSTI ID:945347

Hong, Tao ^[1]; Garlea, Vasile O ^[1]; Zheludev, Andrey I ^[1]; Fernandez-Baca, Jaime A ^[1]; Manaka, H. ^[2]; Chang, S. ^[3]; Leao, J. B. ^[3]; Poulton, S. J. ^[3]

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1. ORNL
2. Kagoshima University, Kagoshima JAPAN
3. 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 Laboratory (ORNL); High Flux Isotope Reactor
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 945347
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 22 Vol. 78
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
COPPER CHLORIDES
INELASTIC SCATTERING
MAGNETIC SUSCEPTIBILITY
NEUTRON DIFFRACTION
ORGANOMETALLIC COMPOUNDS
PHASE TRANSFORMATIONS
PRESSURE DEPENDENCE
SPIN