Field-induced paramagnons at the metamagnetic transition in Ca1.8Sr0.2RuO4

P. Steffens; Y. Sidis; P. Link; K. Schmalzl; S. Nakatsuji; Y. Maeno; M. Braden

doi:10.1103/PhysRevLett.99.217402

Field-induced paramagnons at the metamagnetic transition in Ca1.8Sr0.2RuO4

Strongly Correlated Electrons 2012-02-09 v1

Authors: P. Steffens , Y. Sidis , P. Link , K. Schmalzl , S. Nakatsuji , Y. Maeno , M. Braden

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Abstract

The magnetic excitations in Ca1.8Sr0.2RuO4 were studied across the metamagnetic transition and as a function of temperature using inelastic neutron scattering. At low temperature and low magnetic field the magnetic response is dominated by a complex superposition of incommensurate antiferromagnetic fluctuations. Upon increasing the magnetic field across the metamagnetic ransition, paramagnon and finally well-defined magnon scattering is induced, partially suppressing the incommensurate signals. The high-field phase in Ca1.8Sr0.2RuO4 has, therefore, to be considered as an intrinsically ferromagnetic state stabilized by the magnetic field.

Keywords

metamagnetic transition paramagnons inelastic neutron scattering Ca1.8Sr0.2RuO4 magnetic excitations ferromagnetic state

Cite

@article{arxiv.cond-mat/0703806,
  title  = {Field-induced paramagnons at the metamagnetic transition in Ca1.8Sr0.2RuO4},
  author = {P. Steffens and Y. Sidis and P. Link and K. Schmalzl and S. Nakatsuji and Y. Maeno and M. Braden},
  journal= {arXiv preprint arXiv:cond-mat/0703806},
  year   = {2012}
}

Field-induced paramagnons at the metamagnetic transition in Ca1.8Sr0.2RuO4

Abstract

Keywords

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