| Titel | Referent | Datum | Ort |
|---|---|---|---|
| Gemeinsames TKM-TFP Seminar | Garst, Mirlin, Rockstuhl, Schmalian, Shnirman |
Montag, 14.00-15.30 Uhr |
10-01 |
| TFP Institutsseminar | Garst, Rockstuhl |
Dienstag, 13.00-14.00 Uhr |
10-01 |
| IQMT Seminar | Campus Nord, Geb. 425 |
||
| Physikalisches Kolloquium | Freitag, 15.45-17.15 Uhr |
Lehmann HS |
Seminar über Theoretische Festkörperphysik |
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| Vortragender: | Jens Paaske |
Datum: | 14.05.2018 14:00 |
|---|---|---|---|
| Ort: | Room 10.01, 10th Floor, Bldg. 30.23, KIT Campus South |
Zugehörigkeit: | Niels Bohr Institute, Copenhagen |
| Gastgeber: | Prof. Dr. Alexander Shnirman |
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Abstract
In this talk, I will argue that Cooper pairs can induce magnetic frustration in systems of two-dimensional (2D) magnetic adatom lattices on s-wave superconducting surfaces. The competition between singlet electron correlations and the RKKY coupling is shown to lead to a variety of hidden order states that break the point-group symmetry of the 2D adatom lattice at finite temperature. Using a newly developed effective bond theory [1, 2], we have constructed the corresponding phase diagram, which displays broad regions of long-range vestigial nematic order.
[1] M. Schecter, O. F. Syljuåsen, J. Paaske, Phys. Rev. Lett. 119, 157202 (2017)
[2] M. Schecter, O. F. Syljuåsen, J. Paaske, arXiv:1710.08439