High-spin magnetic heavy-fermion states at ferromagnet/heavy-fermion interfaces

✍ Scribed by Changfeng Chen

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 141 KB
• Volume: 194-196
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)91001-4

✦ Synopsis

Using symmetry considerations and exact diagonalization techniques, we examine the heavy-fermion behavior in an eight-site periodic small-cluster t-t'-J model on the fcc lattice. An interpolation scheme is introduced to construct an interface structure. The ground-state properties and the heavy-fermion (correlation) behavior as the function of the interface coupling axe studied. High-spin magnetic heavy-fermion states axe identified at the ferromagnet/heavy-fermlon interfaces. Implications of the calculated results axe discussed.