Magnetic Properties of SO(5) Superconductivity

✍ Scribed by M. Juneau; R. MacKenzie; M.-A. Vachon

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 129 KB
• Volume: 298
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1006/aphy.2002.6263

✦ Synopsis

The distinction between type I and type II superconductivity is reexamined in the context of the SO(5) model recently put forth by Zhang. Whereas in conventional superconductivity only one parameter (the Ginzburg-Landau parameter κ) characterizes the model, in the SO(5) model there are two essential parameters. These can be chosen to be κ and another parameter, β, related to the doping. There is a more complicated relation between κ and the behavior of a superconductor in a magnetic field. In particular, one can find type I superconductivity, even when κ is large, for appropriate values of β.