Superinsulators, a toy realization of QCD in condensed matter

Datum

17.09.2019

Zeit

10:30 - 11:30

Sprecher

Dr. Cristina Diamantini

Zugehörigkeit

INFN - Istituto Nazionale di Fisica Nucleare, Università di Perugia

Sprache

en

Hauptthema

Materialien

Host

Grit Rötzer

Beschreibung

Superinsulators, a new topological state of matter, are dual superconductors, dissipationless vortex condensate with infinite resistance. This state of matter has been predicted in the critical vicinity of the superconductor-insulator transition (SIT) which is completely determined by charge-vortex topological interactions embodied by the Aharonov-Bohm/Aharonov- Casher (ABC) phases they acquire when encircling one another. On the insulating side this leads to a phase which is a single-color, asymptotically safe version of QCD in which the infinite resistance is caused by the linear confinement of charges. This phase has been experimentally detected in TiN, NbTiN and InO superconducting thin films, including signatures of asymptotically safe behaviour and of the dual, electric Meissner effect. This makes superinsulatots a “toy realization” of QCD with Cooper pairs playing the role of quarks. .

Links

• Seminars at the IFW

Letztmalig verändert: 17.09.2019, 00:08:23