Multigap superconductivity has been discussed since the 1950's. Nevertheless, the topic remained essentially speculative until 2001, when for the first time multigap superconductivity has been demonstrated to take place in a real material, as MgB2. In the last few years evidence of multigap superconductivity has been claimed for several different classes of superconductors. Thanks to the high brightness of THz synchrotron radiation we addressed multiband superconductivity on two model systems: The prototype multiband superconductor MgB2 and the A-15 superconductor V 3Si. © 2010 American Institute of Physics.
THz spectroscopy of multigap superconductors / A., Perucchi; Lupi, Stefano; Ortolani, Michele; Nicoletti, Daniele; DI CASTRO, Daniele; M., Putti; C., Ferdeghini; Dore, Paolo. - In: AIP CONFERENCE PROCEEDINGS. - ISSN 0094-243X. - ELETTRONICO. - 1214:(2010), pp. 13-15. (Intervento presentato al convegno 5th International Workshop on Infrared Microscopy and Spectroscopy with Accelerator Based Sources, WIRMS 2009 tenutosi a Banff; Canada nel 13 September 2009 through 17 September 2009) [10.1063/1.3326336].