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Charging in the vortex lattice of type-II superconductors
| Title: | Charging in the vortex lattice of type-II superconductors |
| Authors: | Ohuchi, Marie Browse this author | | Ueki, Hikaru Browse this author | | Kita, Takafumi Browse this author →KAKEN DB |
| Issue Date: | 22-Feb-2022 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 105 |
| Issue: | 6 |
| Start Page: | 064514 |
| Publisher DOI: | 10.1103/PhysRevB.105.064514 |
| Abstract: | We study the magnetic-field dependence of the vortex-core charge in the Abrikosov lattice of an s-wave superconductor based on the augmented quasiclassical equations, where we incorporate the pair-potential gradient (PPG) terms characteristic of charging in superconductors besides the well-known Lorentz force. Our numerical results at T = 0.2T(c) and 0.5T(c) reveal that periodic charge redistribution is superimposed on the magnetic flux-line lattice with different spatial patterns at different fields. The PPG terms are dominant at weak fields over the Lorentz force for accumulating charge in the vortex cores, whereas the Lorentz force prevails at higher fields to give rise to a peak structure in the core charge around H similar to 1/2 H-c2. We estimate the peak value of the core charge at T = 0.2T(c) using parameters appropriate for cuprates to obtain a large value of Q similar to 10(-2) vertical bar e vertical bar in the core region of radius 0.2 xi(0) in the ab plane and length 1 nm along the c axis. |
| Rights: | ©2022 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/84883 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 北 孝文
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