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Protected Fe valence in quasi-two dimensional $\alpha$-FeSi$_2$

Autor: Miiller, W., Tomczak, J. M., Simonson, J. W., Smith, G., Kotliar, G., Aronson, M. C.

Publikováno v: J. Phys.: Condens. Matter 27 (2015) 175601

We report the first comprehensive study of the high temperature form ($\alpha$-phase) of iron disilicide. Measurements of the magnetic susceptibility, magnetization, heat capacity and resistivity were performed on well characterized single crystals.

Externí odkaz: http://arxiv.org/abs/1408.3606

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Magnetic structure of Yb2Pt2Pb: Ising moments on the Shastry-Sutherland Lattice

Autor: Miiller, W., Wu, L. S., Kim, M. S., Orvis, T., Simonson, J. W., Gamaza, M., McNally, D. E., Nelson, C. S., Ehlers, G., Podlesnyak, A., Helton, J. S., Zhao, Y., Qiu, Y., Copley, J. R. D., Lynn, J. W., Zaliznyak, I., Aronson, M. C.

Publikováno v: Phys. Rev. B 93, 104419 (2016)

Neutron diffraction measurements were carried out on single crystals and powders of Yb2Pt2Pb, where Yb moments form planes of orthogonal dimers in the frustrated Shastry-Sutherland Lattice (SSL). Yb2Pt2Pb orders antiferromagnetically at TN=2.07 K, an

Externí odkaz: http://arxiv.org/abs/1408.0209

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Low-temperature specific heat of the superconductor Mo3Sb7

Autor: Tran, V. H., Miiller, W., Bukowski, Z.

The low-temperature specific heat of a superconductor Mo3Sb7 with T_c = 2.25 (0.05) K has been measured in magnetic fields up to 5 T. In the normal state, the electronic specific heat coefficient gamma_n, and the Debye temperature Theta_D are found t

Externí odkaz: http://arxiv.org/abs/0803.2948

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