Room-temperature skyrmion phase in bulk Cu 2 OSeO 3 under high pressures
Abstract
Skyrmion materials hold great promise for information technology due to the extremely low current needed to modify the spin configurations and the small size of magnetic domains. To facilitate their application, one great challenge is to break the magnetic field–temperature phase space restriction for the skyrmion state. We found that the temperature region for the skyrmion phase in bulk Cu 2 OSeO 3 can be greatly enhanced under physical pressure, making applications more practical by the use of strained heterostructures, for example. The observation of additional structures suggests that the skyrmion state may be insensitive to the underlying crystal structure. This work will stimulate research on finding skyrmion materials with different crystal structures and retaining the room-temperature skyrmion state at ambient condition.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 02, 2020
- Source ID
- 10.1073/pnas.1922108117
Entities
People
- Alexander P. Litvinchuk
- Ching-Wu Chu
- Helmuth Berger
- Hung-cheng Wu
- Hung-duen Yang
- Jey-jau Lee
- Liangzi Deng
- Noah F Q Yuan
- Rabin Dahal
Organizations
- Air Force Office of Scientific Research
- Institute of Physics
- Lawrence Berkeley National Laboratory
- Massachusetts Institute of Technology
- National Science and Technology Council
- National Sun Yat-sen University
- National Synchrotron Radiation Research Center
- Office of Basic Energy Sciences
- University of Houston