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Manipulating coincident charge and spin order with pressure and field in a doped manganite

Roy, A. S. and Husmann, A. and Rosenbaum, T. F. and Mitchell, J. F. (2001) Manipulating coincident charge and spin order with pressure and field in a doped manganite. Physical Review B, 63 (9). Art. No. 094416. ISSN 1098-0121. doi:10.1103/PhysRevB.63.094416.

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The onset of charge order occurs simultaneously with the transition from ferromagnetic metal to antiferromagnetic insulator in Nd_(0.05)Sr_(0.5)MnO_3. The application of hydrostatic pressures P≥15 kbar removes the degeneracy, as recorded in both the electrical resistivity and the magnetic susceptibility. The charge-ordered state moves swiftly to higher temperature with increasing pressure at the expense of the ferromagnetic charge liquid, dominating the energetics. An applied magnetic field H suppresses both the pressure-split charge order and the antiferromagnetism, but charge order preferentially, so by H = 2 T the two transitions are reunited. Finally, depinning domains of charge order with electric field deep in the antiferromagnetic insulator permits us to monitor pressure-induced changes in the charge (poly)crystal.

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Additional Information:© 2001 The American Physical Society. Received 17 November 2000; published 9 February 2001. We are grateful to P. Schiffer for insightful comments and to A. Hoekstra for technical guidance. The work at the University of Chicago was supported by NSF Grant No. DMR-9801824. The work at Argonne was supported by the U.S. Department of Energy Materials Science–Office of Science under Contract No. W-31-109-ENG-38.
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Department of Energy (DOE)W-31-109-ENG-38
Issue or Number:9
Classification Code:PACS: 75.30.Kz, 71.27.1a, 71.30.1h, 71.45.Lr
Record Number:CaltechAUTHORS:20140707-163031304
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46970
Deposited By: George Porter
Deposited On:09 Jul 2014 21:16
Last Modified:10 Nov 2021 17:32

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