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Matthias Vojta: Quantum spin liquids - From solvable models to experiments
Termin |
Donnerstag, 7. Dezember 2017, 17.15 - 18.30 Uhr
|
Veranstaltungsart |
Kolloquium |
Einrichtung |
Naturwissenschaftliche Fakultät II |
Veranstalter |
Institut für Physik, SFB 762 |
Veranstaltungsort |
Leibniz-Institut für Agrarentwicklung in Transformationsökonomien |
Straße |
Theodor-Lieser-Straße 2 |
PLZ/Ort |
06120 Halle (Saale) |
Beschreibung
Quantum magnets play a key role in the search for novel states of matter: They can display both conventional (i.e. symmetry-breaking) and topological forms of order, together with novel types of elementary excitations, with magnetic monopoles in spin ice being a prominent example.
This talk with Prof. Matthias Vojta (Technical University, Dresden) will discuss a particularly fascinating class of frustrated magnets, so-called quantum spin liquids, in which large classical degeneracies and quantum effects conspire to produce non-trivial phases. The emergence of fractionalized excitations and artificial gauge fields will be discussed using explicit microscopic models. Physical signatures of these emergent phenomena will be highlighted. Throughout the talk, contact will be made with experiments: Candidate spin-liquid materials and key experimental results will be discussed. Finally, connections to cuprate high-temperature superconductivity will be highlighted.
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