Hyperfine Interactions in the Heavy Fermion CeMIn_5 Systems

Abstract

The CeMIn_5 heavy fermion compounds have attracted enormous interest since their discovery six years ago. These materials exhibit a rich spectrum of unusual correlated electron behavior, and may be an ideal model for the high temperature superconductors. As many of these systems are either antiferromagnets, or lie close to an antiferromagnetic phase boundary, it is crucial to understand the behavior of the dynamic and static magnetism. Since neutron scattering is difficult in these materials, often the primary source of information about the magnetic fluctuations is Nuclear Magnetic Resonance (NMR). Therefore, it is crucial to have a detailed understanding of how the nuclear moments interact with conduction electrons and the local moments present in these systems. Here we present a detailed analysis of the hyperfine coupling based on anisotropic hyperfine coupling tensors between nuclear moments and local moments. Because the couplings are symmetric with respect to bond axes rather than crystal lattice directions, the nuclear sites can experience non-vanishing hyperfine fields even in high symmetry sites.

15 pages, 5 figures

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Cited by in corpus (13)

• Microscopic evidence for field-induced magnetism in CeCoIn${}_5$
• Field Evolution of Coexisting Superconducting and Magnetic Orders in CeCoIn${}_5$
• Nuclear magnetic resonance as a probe of electronic states of Bi2Se3
• The interface between heavy fermions and normal electrons investigated by spatially-resolved nuclear magnetic resonance
• Hyperfine fields and magnetic structure in the B phase of CeCoIn5
• Orbitally defined field-induced electronic state in a Kondo lattice
• Crystallographic and magnetic structure of UNi${}_4$${}^{11}$B
• Hyperfine Couplings as a Probe of Orbital Anisotropy in Heavy Fermion Materials
• Investigation of the commensurate magnetic structure in heavy fermion CePt2In7 using magnetic resonant X-ray diffraction
• Successive magnetic transitions in heavy fermion superconductor Ce3PtIn11 studied by 115In nuclear quadrupole resonance
• Determination of the magnetic q vectors in the heavy fermion superconductor Ce3PtIn11
• Local aging effects in PuB${}_4$: Growing inhomogeneity and slow dynamics of local-field fluctuations probed by ${}^{239}$Pu NMR
• Nuclear magnetic resonance investigation of the heavy fermion system Ce${}_2$CoAl${}_7$Ge${}_4$