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25 April 2024

» arxiv » cond-mat/0606499

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Magnetic Excitations of the 2-D Sm Spin Layers in Sm(La,Sr)CuO4
F. Ronning ; C. Capan ; N.O. Moreno ; J.D. Thompson ; L.N. Bulaevskii ; R. Movshovich ; D. van der Marel ;
Date:	19 Jun 2006
Abstract:	We present specific heat and susceptibility data on Sm(La,Sr)CuO4 in magnetic fields up to 9 T and temperatures down to 100 mK. We find a broad peak in specific heat which is insensitive to magnetic field at a temperature of 1.5 K with a value of 2.65 J/mol K. The magnetic susceptibility at 5 T continues to increase down to 2 K, the lowest temperature measured. The data suggest that the Sm spin system may be an ideal realization of the frustrated Heisenberg antiferromagnet on the square lattice.
Source:	arXiv, cond-mat/0606499
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