Charge-Transfer Plasmon Polaritons at Graphene/α-RuCl3Interfaces
D. J. Rizzo, B. S. Jessen, Z. Sun, F. L. Ruta, J. Zhang, J.-Q. Yan, L. D. Xian, A. S. McLeod, M. E. Berkowitz, K. Watanabe, T. Taniguchi, S. E. Nagler, D. G. Mandrus, A. Rubio, M. M. Fogler, A. J. Millis, J. C. Hone, C. R. Dean, D. N. Basov
How long does it take electrons to ‘dress’ in light and form Floquet bands? Just one single optical cycle is enough, according to a research team involving the Universities of Marburg, Regensburg and MPSD group leader Michael Sentef. Its study has been published in Nature.
Researchers in Germany and the U.S.A. propose a new optical method to verify topological magnon phases. Writing in PRL, the team shows that the intensity of polarized laser light scattered back from a magnetic material is an indicator of topological phases.
Research team involving experimentalists and theorists explores how light can fundamentally alter the properties of solids - and how to harness these phenomena in laser-driven materials for future applications. Their colloquium has been published in Reviews of Modern Physics.
Researchers in Hamburg and Aachen suggest a surprising connection between the nematic behavior of a superconductor in a magnetic field — a state that resembles liquid crystals used in LCDs — and its spiral-like groundstate in the absence of the field.
A universal Doppler effect limits the maximal spin current in magnetic insulators which have been driven out of equilibrium by magnetic fields. These findings by an international research team present a surprising parallel to what happens in superconductors driven by electric fields and could aid the design of future nano-devices.
Researchers gain a direct view of spin waves by placing a diamond chip with a layer of nitrogen vacancy centers on top of a thin magnetic film. Once the spin waves are excited, the NV centers pick up their magnetic fields and enable high-resolution imaging.
Researchers show that short-lived topological states can be tracked with equally short light flashes spiraling like a corkscrew, using signal difference between left- and right-handed light.
Researchers at the University of Oxford and the MPSD report in Physical Review Letters that a dynamical version of superconductivity, which is generated by periodically shaking the material, is intimately tied to strong electronic correlations and geometric frustration.
Laser light with a broad colour spectrum turns the insulating quasi two-dimensional material La2CuO4 (LCO) into a three-dimensional metal. The research, now published in PNAS, reveals that specific vibrations of the crystal lattice are involved in this metallization process.
The Berry curvature - an important property of quantum materials - can be imaged with chiral light. An international research team has predicted the outcomes of photoelectron spectroscopy experiments and showed that the resulting images reveal information about the microscopic structure of electronic wavefunctions inside atomically thin, two-dimensional materials.
Researchers uncover how quantum fluctuations can be used to restore the fundamental symmetry of the electronic motions in crystals affected by magnetic fields.
Controlling the quantum properties of materials is a central challenge in physics as well as an essential step towards using quantum physics for applications or building scalable quantum computers.