Volume 120, Number 2, October 2017
|Number of page(s)||7|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||08 January 2018|
Impurity-induced bound states in chiral p-wave superconducting nanoloops
1 Department of Physics, Shanghai University - Shanghai 200444, China
2 Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University - Shanghai 200444, China
Received: 6 October 2017
Accepted: 14 December 2017
The impurity-induced bound states in symmetric and asymmetric chiral p-wave superconducting nanoloops are investigated by numerically solving the Bogoliubov-de Gennes equations self-consistently. When a magnetic impurity is involved, the impurity bound level crosses the Fermi level at some impurity strength for the square loop, accompanied by a current jump at the zero-energy point. The evolution of zero-energy states can be effectively tuned by the located site of a single magnetic impurity. For the asymmetric rectangular loop, the zero mode is easier to be generated when a magnetic impurity is placed at the edge of the short side. In addition, the zero-energy states can be modulated by the threaded magnetic flux. Particularly, for an appropriate strength of the midway magnetic impurity, the zero-energy crossing of the impurity bound level takes place twice with increasing flux.
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.