Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu2Ge2

D. K. Singh; A. Thamizhavel; J. W. Lynn; S. K. Dhar; T. Hermann

doi:10.1103/PhysRevB.86.060405

Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu2Ge2

Strongly Correlated Electrons 2012-09-03 v1

Authors: D. K. Singh , A. Thamizhavel , J. W. Lynn , S. K. Dhar , T. Hermann

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Abstract

Neutron diffraction measurements on a high quality single crystal of CeAu2Ge2 reveal two new magnetic structures that coexist with commensurate long range antiferromagnetic order below the Neel temperature T_N ~ 14 K. The new magnetic structures, which exhibit distinct temperature and field dependencies, are described by both commensurate and incommensurate magnetic structures and introduces new region in the H-T phase diagram. These new experimental observations provide essential information for developing a universal understanding of the magnetic properties of this class of Ce-based CeX2M2 (X = Cu, Ag, Au; M = Ge, Si) compounds, which are prototypes for exploring quantum phase transitions and their interplay with unconventional superconductivity.

Keywords

CeAu2Ge2 neutron diffraction antiferromagnetic order magnetic structures H-T phase diagram quantum phase transitions

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@article{arxiv.1204.4378,
  title  = {Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu2Ge2},
  author = {D. K. Singh and A. Thamizhavel and J. W. Lynn and S. K. Dhar and T. Hermann},
  journal= {arXiv preprint arXiv:1204.4378},
  year   = {2012}
}

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Heavy fermion

Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu2Ge2

Abstract

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