Model valence-fluctuation systems: variational ground states and magnetic responses

Conference · Mon Mar 31 23:00:00 EST 1980

DOI:https://doi.org/10.1016/0378-4363(80)90194-1· OSTI ID:5454909

Brandow, B H

Variational ground-state wavefunctions are presented and optimized for two model valence-fluctuation systems, based on Anderson lattice Hamiltonians in the U ..-->.. infinity limit. Although these wavefunctions are approximate, they are treated in an essentially exact manner. The )f/sup 0/, f/sup 1/; n = 1) system has an intuitively reasonable ground-state susceptibility, while the )f/sup 1/, f/sup 2/; n = 2) system is found to exhibit an insulating gap. Due to their different crystal symmetries, this gap should be realized in SmB/sub 6/ but not in SmS.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5454909
• Report Number(s): LA-UR-80-1005; CONF-800417-2
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ENERGY LEVELS
FUNCTIONS
GROUND STATES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SAMARIUM BORIDES
SAMARIUM COMPOUNDS
SAMARIUM SULFIDES
SULFIDES
SULFUR COMPOUNDS
VARIATIONAL METHODS
WAVE FUNCTIONS