Mapping the Magnetostructural Quantum Phases of Mn3O4

M. Kim, X. M. Chen, Y. I. Joe, E. Fradkin, P. Abbamonte, and S. L. Cooper
Phys. Rev. Lett. 104, 136402 – Published 30 March 2010

Abstract

We present temperature-dependent x-ray diffraction and temperature- and field-dependent Raman scattering studies of single-crystal Mn3O4, which reveal the magnetostructural phases that evolve in the spinels due to the interplay between strong spin-orbital coupling, geometric frustration, and applied magnetic field. We present evidence that the magnetoelastic and magnetodielectric behavior in this material is governed by magnetic-field-controlled tetragonal-to-monoclinic phase changes. Most interestingly, for an applied field transverse to the ferrimagnetic ordering direction, H[11¯0], we find evidence for a field-tuned quantum phase transition to a tetragonal spin-disordered phase, indicating that a structurally symmetric, spin frustrated phase can be recovered at T0 for intermediate transverse fields in Mn3O4.

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  • Received 9 December 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.136402

©2010 American Physical Society

Authors & Affiliations

M. Kim, X. M. Chen, Y. I. Joe, E. Fradkin, P. Abbamonte, and S. L. Cooper

  • Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA

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Issue

Vol. 104, Iss. 13 — 2 April 2010

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