期刊
NEW JOURNAL OF PHYSICS
卷 22, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aba650
关键词
skyrmion; magnetoresistance; frustrated itinerant magnet; magnetization; phase diagram
资金
- U.S. Department of Energy [DE-SC0020254]
- Organized Research Unit Program at the University of Tennessee
- State of Tennessee
- Tennessee Higher Education Commission (THEC) through the Center for Materials Processing
- Electromagnetic Property (EMP) Lab Core Facility at the University of Tennessee
We performed a systematic study of the temperature- and field-dependence of magnetization and resistivity of Gd2PdSi3, which is a centrosymmetric skyrmion crystal. We show that a phase diagram can be constructed based on the anomalous magnetoresistance with one-to-one correspondence among all the feature, while the DC magnetization behavior is consistent with the reported phase diagram based on AC susceptibility. In addition, the crossover boundary from a paramagnetic state into the field-induced ferromagnetic state is also identified. Our results suggest that the ferromagnetic spin fluctuations above the Neel temperature play a key role in the high sensitivity of the resistivity anomalies to magnetic field, pointing to the rich interplay of different magnetic correlations at zero and finite wave vectors underlying the skyrmion lattice in this frustrated itinerant magnet.
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