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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
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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.

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F. Ronning, C. Capan, N. O. Moreno, J. D. Thompson, L. N. Bulaevskii, R. Movshovich, D. van der Marel. 2006-06-19. Magnetic Excitations of the 2-D Sm Spin Layers in Sm(La,Sr)CuO4. https://doi.org/10.1016/j.jmmm.2006.10.366

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