Calame, M.Korshunov, S. E.Leemann, Ch.Martinoli, P.2004-12-272004-12-2720012001http://hdl.handle.net/2003/1955010.17877/DE290R-2253enThe American Physical SocietyPhysical Review Letters530Collective Pinning of a Frozen Vortex Liquid in Ultrathin Superconducting YBa2Cu3O7 Films10.1103/PhysRevLett.86.3630article (journal)