| Issue |
Europhys. Lett.
Volume 40, Number 2, October II 1997
|
|
|---|---|---|
| Page(s) | 207 - 212 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00446-x | |
| Published online | 01 September 2002 | |
Low-lying excitations around a single vortex in a d-wave superconductor
1
Department of Applied Physics, University of Tokyo,
7-3-1 Hongo Bunkyo-ku, Tokyo 113, Japan
2
Institute for Solid State Physics,
University of Tokyo,
7-22-1 Roppongi Minato-ku, Tokyo 106, Japan
3
Department of Physics and Astronomy,
University of Southern California, Los Angeles,
CA 90089-0484, USA
Corresponding author: kohmoto@issp.u-tokyo.ac.jp
Received:
23
May
1997
Accepted:
10
September
1997
A full quantum-mechanical treatment of the Bogoliubov-de Gennes
equation for a single vortex in a d-wave superconductor is
presented. First, we find low-energy states extended in four diagonal
directions, which have no counterpart in a vortex of s-wave
superconductors. The four-fold symmetry is due to “quantum
effect ”, which is enhanced when 
is small. On the
other hand, when 
is large, the four-fold symmetry is
suppressed. Second, for 
, a peak with a
large energy gap
is found in the density of
states, which is due to the formation of the lowest bound states.
PACS: 74.60.Ec – Mixed state, critical fields, and surface sheath / 74.72.-h – High-Tc compounds
© EDP Sciences, 1997
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.