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arXiv · 1204.4378

Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu2Ge2

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.

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D. K. Singh, A. Thamizhavel, J. W. Lynn, S. K. Dhar, T. Hermann. 2012-04-19. Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu2Ge2. https://doi.org/10.1103/physrevb.86.060405

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