"Pressure Dependent Diffraction and Spectroscopy of a Dimerized Antiferromagnet"

M. B. Stone: C. A. Tulk, A. dos Santos, J. J. Molaison, S. Chang, J. B. Leao, E. C. Samulon, M. C. Shapiro, and I. R. Fisher; J. Phys. Soc. Jpn., 04/13/11.

Additional Authors: C. A. Tulk, A. dos Santos, J. J. Molaison, S. Chang, J. B. Leao, E. C. Samulon, M. C. Shapiro, and I. R. Fisher

Abstract:

We present pressure dependent neutron diffraction and inelastic neutron scattering measurements of the dimerized antiferromagnet Ba3Mn2O8. The room temperature diffraction measurements reveal a linear decrease in lattice constant as a function of applied pressure. No structural transitions are observed. The low-temperature neutron spectroscopy measurements indicate a small change in magnetic scattering intensity in the vicinity of the spin gap for pressures up to P=0.6 GPa.