R. Feyerherm

TL;DR: In this paper, the authors show that the one-dimensional copper complex [PMCu(NO3)2(H2O)2]n behaves like a uniform S = 1/2 antiferromagnetic Heisenberg chain, characterized by the exchange parameter J/kB = 36 K.

TL;DR: The transition metal coordination compound (Fe) is a canted antiferromagnet with an unusually large canting of the magnetic moments of 14.5 degrees from their general Antiferromagnetic alignment, one of the largest reported to date as discussed by the authors.

TL;DR: In this article, a detailed structural investigation of the organic superconductor BEDT-TTF was performed at all temperatures from 9, 100, and 300 to 0.3em.

TL;DR: In this article, a high-field magnetization study of the antiferromagnetic Heisenberg chain was performed using exact diagonalization of a linear spin chain with up to 20 sites and on basis of the Bethe ansatz equations.

Abstract: We present a detailed study of a series of materials ${\mathrm{UPd}}_{2\ensuremath{-}x}\mathrm{Sn},$ $0l~xl~0.15.$ As function of stoichiometry x the system undergoes a structural transition from an orthorhombic $\mathrm{Pnma}$ lattice $(x=0)$ to a cubic $\mathrm{Fm}3m$ structure $(x=0.15),$ accompanied by a nonmagnetic/antiferromagnetic transition. We characterize the structural and physical ground state properties of cubic and orthorhombic samples by means of macro\char21{} and microscopic experimental techniques. For all samples the physical properties are affected by atomic scale crystallographic disorder. In particular, the electronic transport properties of the cubic materials are highly unusual and do not adhere to the archetypical Kondo type behavior. We discuss possible explanations for the anomalous transport and the relevance of the crystallographic disorder.