Published January 1, 2011 | Version v1
Journal article Metadata-only

The S=1 Underscreened Anderson Lattice model for Uranium compounds

Creators

  • 1. Inst. de fisica, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre (Brazil)
  • 2. Institut Neel, CNRS-UJF, BP 166, 38042 Grenoble Cedex 9 (France)
  • 3. Department of Physics, University of Wisconsin-Madison, Madison, WI 53706 (United States)
  • 4. L. P. S., Universite Paris-Sud, UMR-8502 CNRS, 91405 Orsay (France)

Description

Magnetic properties of uranium and neptunium compounds showing coexistence of the Kondo effect and ferromagnetic order are investigated within the degenerate Anderson Lattice Hamiltonian, describing a 5f2 electronic configuration with S = 1 spins. Through the Schrieffer-Wolff transformation, both an exchange Kondo interaction for the S = 1 f-spins and an effective f-band term are obtained, allowing to describe the coexistence of Kondo effect and ferromagnetic ordering and a weak delocalization of the 5f-electrons. We calculate the Kondo and Curie temperatures and we can account for the pressure dependence of the Curie temperature of UTe.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/273/1/012028

Additional details

Identifiers

DOI
10.1088/1742-6596/273/1/012028;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
273
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
1742-6596

Conference

Title
International conference on strongly correlated electron systems
Acronym
SCES 2010
Dates
27 Jun - 2 Jul 2010
Place
Santa Fe, NM (United States)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43039590
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CURIE POINT; ELECTRONIC STRUCTURE; ELECTRONS; HAMILTONIANS; INTERACTIONS; KONDO EFFECT; MAGNETIC PROPERTIES; NEPTUNIUM COMPOUNDS; PRESSURE DEPENDENCE; SPIN; TELLURIUM COMPOUNDS; URANIUM; URANIUM COMPOUNDS
Descriptors DEC
ACTINIDE COMPOUNDS; ACTINIDES; ANGULAR MOMENTUM; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; LEPTONS; MATHEMATICAL OPERATORS; METALS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; QUANTUM OPERATORS; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE; TRANSURANIUM COMPOUNDS