Finite-temperature behavior of the Anderson lattice

Journal Article · Fri Jan 01 00:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.250· OSTI ID:5579702

Brandow, B H

At finite temperature the picture of renormalized-hybridization quasiparticle bands, obtained by various formalisms at T = 0, is shown to be inadequate in several respects. The most significant refinement recognizes the existence of a new type of elementary excitation, which simply creates (i.e., unbinds or unscreens) a local moment at an arbitrary lattice site. These excitations explain the continuous crossover between the contrasting T<>T/sub K/ behaviors. They also explain the surprisingly rapid weakening, with increasing T, of inelastic peaks in neutron scattering. The concept of ''coherence'' is clarified. Numerical results are presented for entropy, specific heat, average valence, magnetic susceptibility, and inelastic neutron scattering.

• Research Organization: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5579702
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 37:1
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SOLIDS
BAND THEORY
TEMPERATURE EFFECTS
CRYSTAL LATTICES
ENTROPY
EXCITATION
FLUCTUATIONS
HYBRIDIZATION
MAGNETIC SUSCEPTIBILITY
NEUTRON DIFFRACTION
PHYSICAL PROPERTIES
SPECIFIC HEAT
VALENCE
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ENERGY-LEVEL TRANSITIONS
MAGNETIC PROPERTIES
SCATTERING
THERMODYNAMIC PROPERTIES
VARIATIONS
656002* - Condensed Matter Physics- General Techniques in Condensed Matter- (1987-)