RESEARCH HIGHLIGHTS
Measuring Magnetic Field Texture in Correlated Electron Systems under Extreme Conditions
Pressure is a clean, continuous, and systematic tuning parameter among the competing ground states in strongly correlated electron systems such as superconductivity and magnetism. However, owing to the restricted access to samples enclosed in high-pressure devices, compatible magnetic field sensors with sufficient sensitivity are rare. Collaborating with Prof. Swee Goh's team, we used nitrogen vacancy centers in diamond as a spatially resolved vector field sensor for material research under pressure at cryogenic temperatures. Using a single crystal of BaFe2(As0.59P0.41)2 as a benchmark, we extracted the superconducting transition temperature, the local magnetic field profile in the Meissner state, and the critical fields. The method developed in this work offers a distinct tool for probing and understanding a range of quantum many-body systems.
Jointed team photo: from left, Sen, King (Swee's group), Hoho, Alan, Yang, Wei(Swee's group), Swee
News coverages:
General media
Reference:
- Measuring magnetic field texture in correlated electron systems under extreme conditions
- King Yau Yip, Kin On Ho, King Yiu Yu, Yang Chen, Wei Zhang, S. Kasahara, Y. Mizukami, T. Shibauchi, Y. Matsuda, Swee K. Goh, Sen Yang, Science 366, 1355 (2019) Published online: 13 Dec 2019