Dresden 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 57: Posters Magnetism II
MA 57.36: Poster
Donnerstag, 19. März 2020, 15:00–18:00, P3
Measuring Superconducting Phase Transitions with Nitrogen-Vacancy Centers in Diamond — •Domenico Paone1,2, Dinesh Pinto1,3, Liwen Feng1,4, Min-Jae Kim1,4, Gideok Kim1, Rainer Stöhr2, Stefan Kaiser1,4, Bernhard Keimer1, Jörg Wrachtrup1,2, and Klaus Kern1,3 — 1Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany — 23rd Institute of Physics and Research Center SCoPE, University Stuttgart, 70569 Stuttgart, Germany — 3Institute de Physique, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland — 44th Institute of Physics and Research Center SCoPE, University Stuttgart, 70569 Stuttgart, Germany
The magnetism in superconductors is often accompanied by exotic electronic phases such as the vortex formation in high temperature type II superconductors. Several experimental tools have been developed to study magnetic phase transitions within these systems. However, the local sensing of dynamical mechanisms in superconductors still remains a challenge. A sensor scheme based on an atomic sized quantum sensor, the nitrogen-vacancy (NV) center in diamond, pushes the sensitivity to the local read out of weak magnetic fields. Here, we present a spatially resolved study of the Meissner effect by using the fluorescence count rate of an NV center ensemble. We are able to observe a correlation between the NV fluorescence and the Meissner state of a Lanthanum Strontium Cooper Oxide (LSCO) thin film. Implementing the NV center emission into time resolved pump probe experiments could enable the local measurement of dynamical processes.