Technical University of Munich
Associate Professorship of Collective Quantum Dynamics (Prof. Knap)
James-Franck-Str. 1
85748 Garching b. München
Prof. Classen performs research in the field of condensed matter physics. She investigates correlated quantum materials with methods of quantum field theory. In these materials the collective behaviour of interacting electrons leads to fascinating states of matter which can serve as a basis for applications in quantum technology. The goal of Prof. Classen’s research is to understand the mechanisms behind the formation of the different states, and to work out characteristic properties.
Physical Review B
Abstract: Altermagnetism, a recently proposed and experimentally confirmed class of magnetic order, features collinear compensated magnetism with unconventional spin-split bands. Here, we show that in a…
Annual Review of Condensed Matter Physics
Abstract: The flattening of single-particle band structures plays an important role in the quest for novel quantum states of matter owing to the crucial role of interactions. Recent advances in theory and…
Physical Review B
Abstract: Interaction-induced charge orders with electronic origin occur as states of spontaneously broken symmetry in several materials platforms. An electronic mechanism for charge order requires an…
Nature Communications
Abstract: The quantum many-body states in twisted bilayer graphene at magic angle have been well understood both experimentally and theoretically. However, the phase diagram and excitations versus twist angle…
Physical Review B
Abstract: Gross–Neveu–Yukawa-type models such as the chiral Ising, chiral XY, and chiral Heisenberg models, serve as effective descriptions of two-dimensional Dirac semimetals undergoing quantum phase…
Physical Review B
Abstract: The discovery of a charge density wave in FeGe extends the discussion of the nature of charge order in kagome metals to a magnetic compound. Motivated by this observation, we combine density…
Physical Review B
Abstract: Van Hove (VH) singularities in the single-particle band spectrum are important for interaction-driven quantum phases. Whereas VH points are usually spin-degenerate, in newly proposed altermagnets VH…
Physical Review Research
Abstract: We determine the ground states and excitation spectra of the paradigmatic four-flavor Heisenberg model with nearest- and next-nearest-neighbor exchange couplings on the triangular lattice in a field…
Physical Review Research
Abstract: Evidence for correlated insulating and superconducting phases around regions of high density of states was reported in the strongly spin-orbit coupled van der Waals material twisted tungsten…
Physical Review B
Abstract: We study possible patterns for spontaneous symmetry breaking in a Dirac fermion model, which is applicable to twisted bilayer graphene at charge neutrality. We show how a chiral SU(4) symmetry emerges…
| Title | Dates | Duration | Type | Lecturer (assistant) |
|---|---|---|---|---|
| Advanced Topics in the Theory of Quantum Matter |
|
2 | PS | |
| Revision Course to Advanced Topics in the Theory of Quantum Matter |
|
2 | RE | |
| Revision Course to Theory of Quantum Matter |
|
2 | RE | |
| Theory of Quantum Matter |
|
2 | PS |
| Title | Dates | Duration | Type | Lecturer (assistant) |
|---|---|---|---|---|
| Advanced Quantum Mechanics |
|
2 | VO | |
| Exercise to Advanced Quantum Mechanics |
|
2 | UE |
L. Classen [L]
|