Issue |
EPL
Volume 124, Number 4, November 2018
|
|
---|---|---|
Article Number | 47002 | |
Number of page(s) | 7 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/124/47002 | |
Published online | 10 December 2018 |
Modulations of chiral order parameters in mesoscopic p-wave superconducting square systems
1 Department of Physics, Shanghai University - Shanghai 200444, China
2 Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University - Shanghai 200444, China
Received: 8 August 2018
Accepted: 14 November 2018
The modulations of order parameters in mesoscopic chiral p-wave superconducting square systems are investigated by numerically solving the Bogoliubov-de Gennes equations self-consistently. For a perfect square, a chiral domain wall tends to emerge along the horizontal direction of the sample center, while the suppression of magnitude for orders is presented in different diagonal directions for a square loop with a centered square hole. When a single non-magnetic impurity is involved into the loop system, the gap parameter is strongly modified with tuning flux for finite impurity strength. Particularly, an impurity-induced intermediate state with asymmetric feature of the order-parameter distributions shows up stably. Due to the appearance of energy jumps at the points of phase transitions, pronounced sawtooth-like patterns of the currents are induced, which are highly sensitive to the located impurity site.
PACS: 74.78.Na – Mesoscopic and nanoscale systems / 74.20.Fg – BCS theory and its development
© EPLA, 2018
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.