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Direct measurement of spin correlations using magnetostriction

V. S. Zapf, V. F. Correa, P. Sengupta, C. D. Batista, M. Tsukamoto, N. Kawashima, P. Egan, C. Pantea, A. Migliori, J. B. Betts, M. Jaime, and A. Paduan-Filho
Phys. Rev. B 77, 020404(R) – Published 9 January 2008; Erratum Phys. Rev. B 83, 099901 (2011)

Abstract

We demonstrate that the short-range spin correlator SiSj, a fundamental measure of the interaction between adjacent spins, can be directly measured in certain insulating magnets. We present magnetostriction data for the insulating organic compound NiCl24SC(NH2)2, and show that the magnetostriction as a function of field is proportional to the dominant short-range spin correlator. Furthermore, the constant of proportionality between the magnetostriction and the spin correlator gives information about the spin-lattice interaction. Combining these results with the measured Young’s modulus, we are able to extract dJdz, the dependence of the superexchange constant J on the Ni interionic distance z.

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  • Received 7 November 2007

DOI:https://doi.org/10.1103/PhysRevB.77.020404

©2008 American Physical Society

Erratum

Erratum: Direct measurement of spin correlations using magnetostriction [Phys. Rev. B. 77, 020404(R) (2008)]

Franziska Weickert, Robert Küchler, Vivien Zapf, Marcelo Jaime, and Amando Paduan-Filho
Phys. Rev. B 83, 099901 (2011)

Authors & Affiliations

V. S. Zapf1, V. F. Correa2,*, P. Sengupta1,3, C. D. Batista3, M. Tsukamoto4, N. Kawashima4, P. Egan1,5, C. Pantea1, A. Migliori1, J. B. Betts1, M. Jaime1, and A. Paduan-Filho6

  • 1National High Magnetic Field Laboratory (NHMFL), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, USA
  • 2NHMFL, Tallahassee, Florida 23210, USA
  • 3T-11 Condensed Matter and Thermal Physics, LANL, Los Alamos, New Mexico 87545, USA
  • 4Institute for Solid State Physics, University of Tokyo, Tokyo, Japan
  • 5Oklahoma State University, Stillwater, Oklahoma 74078, USA
  • 6Instituto de Fisica, Universidade de São Paulo, São Paulo, Brazil

  • *Present address: Comisión Nacional de Energía Atómica, Centro Atómico Bariloche, Argentina.

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Issue

Vol. 77, Iss. 2 — 1 January 2008

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