Spectator fermion binding of bosons

✍ Scribed by A. Kallio; V. Apaja; S. Pöykkö

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 228 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)92396-5

✦ Synopsis

We propose a simple molecular binding model for the bosons by considering two heavy charges Ze with mass M2 embedded into electron gas with mass m. In the lowest order approximation we derive a closed form expression Veil(r) for the binding potential which has short-range repulsion followed by attraction. In the classical limit M2 >> m, we calculate the bond length R and cohesive energy E for the lithium metal to be R = 3.1 /~, E = -.9 eV. The same interaction for two holes in a parabolic band with M2 >> m gives quantum mechanical bound ztate which one may interprete as a boson appearing in high-T¢ superconductors such as 123.