Within the seminar, students give talks on current topics in condensed matter physics. The seminar aims to give a closer look at new developments in condensed matter physics and to show how these developments can be transferred into applications. The seminar focuses on spin electronics, spin dynamics, solid-state quantum information processing, the physics of solid-state nanostructures, and high temperature superconductivity. These topics are in the focus of several research projects of WMI and collaborative research programs in the Munich area (e.g. the Excellence Cluster "Munich Center for Quantum Science and Technology (MCQST)", the Munich Quantum Valley e.V., as well as several BMBF and EU projects).

The seminar is relevant for the special courses on "Superconductivity and Low Temperature Physics" as well as on "Magnetism and Spintronics". It is suitable for bachelor students in the 5th semester or higher and for master students.

Schedule

List of open topics for seminar talks in WS 2022/23:

1. Macroscopic Quantum Test with Bulk Acoustic Wave Resonators (Björn Schrinski et al., Phys. Rev. Lett. 130, 133604 (2023))

2. On-demand directional microwave photon emission using waveguide quantum electrodynamics (Bharath Kannan et al., Nature Physics 19, 394 (2023))

3. Nonlinear multi-frequency phonon lasers with active levitated optomechanics (Tengfang Kuang et al., Nature Physics 19, 414 (2023))

4. Electric field–dependent phonon spectrum and heat conduction in ferroelectrics (Brand L. Wooten et al., Science Advances 9, eadd7194(2023))

5. Room-temperature magnetoresistance in an all-antiferromagnetic tunnel junction (Peixin Qin et al., Nature 613, 485 (2023))

6. Giant spin polarization and a pair of antiparallel spins in a chiral superconductor (R. Nakajima et al., Nature 613, 479 (2023))

7. Topological kagome magnets and superconductors (J.X. Yin et al., Nature 612, 647 (2022))

8. Distributed quantum sensing with mode-entangled spin-squeezed atomic states (B.K. Malia et al., Nature 612, 661 (2022))

9. Topological lattices realized in superconducting circuit optomechanics (A. Youssefi et al., Nature 612, 666 (2022))

10. Electrons with Planckian scattering obey standard orbital motion in a magnetic field (A. Ataei et al., Nature Physics 18, 1420 (2022))

11. Observation of vortices and vortex stripes in a dipolar condensate (L. Klaus et al., Nature Physics 18, 1453 (2022))

12. Asynchronous current-induced switching of rare-earth and transition-metal sublattices in ferrimagnetic alloys (G. Sala et al., Nature Materials 21, 640 (2022))

13. Random-Access Quantum Memory Using Chirped Pulse Phase Encoding, J. O'Sullivan et al., Phys. Rev. X 12, 041014 (2022))

14. (topic no longer available) Josephson diode effect from Cooper pair momentum in a topological semimetal, Banabir Pal et al., Nature Physics 18, 1228 (2022))

15. Control of chiral orbital currents in a colossal magnetoresistance material, Yu Zhang et al., Nature (2022)

16. Exciton-coupled coherent magnons in a 2D semiconductor, Youn Jue Bae et al., Nature 609, 282 (2022))

17. Superconducting-qubit readout via low-backaction electro-optic transduction (R.D. Delaney et al., Nature 606, 489-493 (2022))

18. Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature (M. Ikhlas et al., Nature Physics 18, 1086 (2022))

19. Emerging Research Landscape of Altermagnetism (Libor Šmejkal et al., Physical Review X 12, 040501 (2022))

20. Chiral cavity quantum electrodynamics (John Clai Ownes et al., Nature Physics 18, 1048 (2022))

21. Evidence for spin swapping in an antiferromagnet (Weiwei Lin et al., Nature Physics 18, 800 (2022))

22. Non-classical mechanical states guided in a phononic waveguide (Amirparsa Zivari et al., Nature Physics 18, 789 (2022))

23. Steady-State Heat Transport and Work With a Single Artificial Atom Coupled to a Waveguide: Emission Without External Driving (Yong Lu et al., PRX Quantum 3, 020305 (2022))

24. Magnifying Quantum Phase Fluctuations with Cooper-Pair Pairing (W.C. Smith et al., Phys. Rev. X 12, 021002 (2022))

25. Steady Floquet–Andreev states in graphene Josephson junctions (Sein Park et al., Nature 603, 421-426 (2022))

26. (topic no longer available) Emission of Photon Multiplets by a dc-Biased Superconducting Circuit (G. C. Ménard et al., Phys. Rev. X 12, 021006 (2022))

27. Scaling of the strange-metal scattering in unconventional superconductors (Jie Yuan et al., Nature 602, 431 (2022))

28. Fermi surface transformation at the pseudogap critical point of a cuprate superconductor (Yawen Fang et al., Nature Physics (2022))

29. (topic no longer available) Mott-Driven BEC-BCS Crossover in a Doped Spin Liquid Candidate κ−(BEDT−TTF)₄Hg_2.89Br₈ (Y. Suzuki et al., Phys. Rev. X 12, 011016 (2022))

30. Optical interface for a hybrid magnon-photon resonator (Banoj Kumar Nayak, et al., Appl. Phjys. Lett. 120, 062404 (2022))

31. Extremely long-range, high-temperature Josephson coupling across a half-metallic ferromagnet (D. Sanchez-Manzano et al., Nature Materials 21, 188-194 (2022))

32. Supercurrent rectification and magnetochiral effects in symmetric Josephson junctions (C. Baumgartner et al., Nature Nanotechnology 17, 39-44 (2022))

33. Superconducting electro-mechanics to test Diósi–Penrose effects of general relativity in massive superpositions (M. F. Gely et al., AVS Quantum Sci. 3, 035601 (2021))

34. Detecting spins by their fluorescence with a microwave photon counter (E. Albertinale et al., Nature 600, 434-438 (2021))

35. Direct Imaging of Current-Induced Antiferromagnetic Switching Revealing a Pure Thermomagnetoelastic Switching Mechanism in NiO (H. Meer et al., Nano Lett. 21, 114 (2021))