Control and local measurement of the spin chemical potential in a magnetic insulator
Abstract
Keeping track of spin transport inside a spintronic device is challenging. Du et al. came up with a method involving diamond nitrogen-vacancy (NV) centers, which can act like tiny, very sensitive magnetometers. The authors placed diamond nanobeams containing the NV centers in close proximity to the sample. This allowed them to measure the spin chemical potential of spin waves—so-called magnons—with nanometer resolution in the material yttrium iron garnet. Because NV centers are also sensitive to temperature, the method may be of use in spin caloritronics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 14, 2017
- Source ID
- 10.1126/science.aak9611
Entities
People
- Amir Yacoby
- Caroline Anne Ross
- Chunhui Du
- Francesco Casola
- Huiliang Zhang
- Mehmet C. Onbaşlı
- Pramey Upadhyaya
- Ronald L. Walsworth
- Toeno van der Sar
- Tony X Zhou
- Yaroslav Tserkovnyak
Organizations
- Army Research Office
- Gordon and Betty Moore Foundation
- Harvard University
- Harvard–Smithsonian Center for Astrophysics
- Koç University
- Massachusetts Institute of Technology
- National Science Foundation
- Swiss National Science Foundation
- United States Department of Energy
- University of California, Los Angeles