Eu2+ spin dynamics in the filled skutterudites EuM4Sb12 (M = Fe, Ru, Os)

F. A. Garcia; C. Adriano; G. G. Cabrera; L. M. Holanda; P. G. Pagliuso; M. A. Avila; S. B. Oseroff; C. Rettori

doi:10.1103/PhysRevB.84.014420

Eu2+ spin dynamics in the filled skutterudites EuM4Sb12 (M = Fe, Ru, Os)

Strongly Correlated Electrons 2015-05-28 v1

Authors: F. A. Garcia , C. Adriano , G. G. Cabrera , L. M. Holanda , P. G. Pagliuso , M. A. Avila , S. B. Oseroff , C. Rettori

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We report evidence for a close relation between the thermal activation of the rattling motion of the filler guest atoms, and inhomogeneous spin dynamics of the Eu2+ spins. The spin dynamics is probed directly by means of Eu2+ electron spin resonance (ESR), performed in both X-band (9.4 GHz) and Q-band (34 GHz) frequencies in the temperature interval 4.2 < T < 300 K. A comparative study with ESR measurements on the Beta-Eu8Ga16Ge30 clathrate compound is presented. Our results point to a correlation between the rattling motion and the spin dynamics which may be relevant for the general understanding of the dynamics of cage systems.

Cite

@article{arxiv.1107.1165,
  title  = {Eu2+ spin dynamics in the filled skutterudites EuM4Sb12 (M = Fe, Ru, Os)},
  author = {F. A. Garcia and C. Adriano and G. G. Cabrera and L. M. Holanda and P. G. Pagliuso and M. A. Avila and S. B. Oseroff and C. Rettori},
  journal= {arXiv preprint arXiv:1107.1165},
  year   = {2015}
}

Comments

6 pages, 4 figures, accepted for publication in Phys. Rev. B

Eu2+ spin dynamics in the filled skutterudites EuM4Sb12 (M = Fe, Ru, Os)

Abstract

Cite

Comments

Related papers