科研之友
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摘要
We have measured the magnetic torque of the ring-shaped crystals of TaSe3 by using piezoresistive cantilevers in order to investigate the superconducting topological properties We measured three ring samples and we observed that the magnetic torque of the ring crystals oscillates with increasing the external magnetic field The first peak of Sample A (radius 37 9 mu m) was 1 21 Gauss and that of Sample B (24 5 mu m) was 3 70 Gauss and that of Sample C (15 6 mu m) was 4 73 Gauss respectively We found that the first peak depends on the length of the circumference itself If there are such relation between the peak field and the length of the circumference it is natural that vortices in the ring crystal were placed along the circumference From these results
- 出版日期2010-6-1
