Field- and pressure-induced phases in Sr4Ru3O10: A spectroscopic investigation

Rajeev Gupta, M. Kim, H. Barath, S. L. Cooper, G. Cao

Research output: Contribution to journalArticlepeer-review

Abstract

We have investigated the magnetic-field- and pressure-induced structural and magnetic phases of the triple-layer ruthenate Sr4Ru3O10. Magnetic-field-induced changes in the phonon spectra reveal dramatic spin-reorientation transitions and strong magnetoelastic coupling in this material. Further, we are able to deduce key magnetoelastic coupling parameters, and evidence that the magnetic moments are localized on the Ru sites. Additionally, pressure-dependent Raman measurements at different temperatures reveal an anomalous negative Gruneisen parameter associated with the B1g mode (∼380cm-1) at low temperatures (T<75K), which can be explained consistently with the field-dependent Raman data.

Original languageEnglish (US)
Article number067004
JournalPhysical review letters
Volume96
Issue number6
DOIs
StatePublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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