期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 90, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5098846
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资金
- JSPS KAKENHI [JP18H01815, JP16H05964, JP17K18756, JP17J01293, JP18J20527]
We have constructed a cylindrical cavity resonator with a hybrid coupler where circularly polarized microwaves can be irradiated to a sample. The polarity of the microwave can be switched by changing the input ports of the hybrid coupler. The cavity resonator is small enough to be mounted on a cryostat which enables us to change the sample temperature in a wide range. To demonstrate the performance of the cavity resonator mounted on a cryostat, Yttrium Iron Garnet (YIG) was used as a test sample. We succeeded in selectively exciting left and right circularly polarized modes with high polarization (>80%). We also evaluated the susceptibility tensor of YIG in the cryostat. The technique presented here would offer a new direction in the fields of spintronics and quantum information. Published under license by AIP Publishing.
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