|
Status |
Confirmed |
|
Seminar Series |
TQM |
|
Subjects |
cond-mat |
|
Date |
Wednesday 12 April 2023 |
|
Time |
14:00 |
|
Institute |
LPTHE |
|
Seminar Room |
LPTHE library, towers 13-14, 4th floor |
|
Speaker's Last Name |
Andolina |
|
Speaker's First Name |
Marcello |
|
Speaker's Email Address |
gian-marcello [dot] andolina [at] college-de-france [dot] fr |
|
Speaker's Institution |
JEIP, CNRS - Collège de France |
|
Title |
Can deep sub-wavelength cavities induce Amperean superconductivity in a 2D material? |
|
Abstract |
Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-
electron interactions (EEEIs) mediated by a transverse gauge field. Originally introduced in the context of
quantum spin liquids and high-Tc superconductors, Amperean superconductivity has been recently
proposed to occur at temperatures on the order of 1-20 K in two-dimensional, parabolic-band, electron
gases embedded inside deep sub-wavelength optical cavities.
I will first generalize the microscopic theory of cavity-induced Amperean superconductivity to the case of
graphene and then argue that this superconducting state cannot be achieved in the deep sub-wavelength
regime. In the latter regime, indeed, a cavity induces only EEEIs between density fluctuations rather than
the current-current interactions which are responsible for Amperean pairing. |
|
arXiv Preprint Number |
|
|
Comments |
|
|
Attachments |
|
