| Issue |
EPL
Volume 84, Number 1, October 2008
|
|
|---|---|---|
| Article Number | 17005 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/84/17005 | |
| Published online | 19 September 2008 | |
Spin and charge structures around vortices in underdoped high-temperature superconductors
Department of Physics, Shanghai University - 99 Shangda Road, Shanghai 200444, PRC
Corresponding author: zgq_1981@shu.edu.cn
Received:
16
July
2008
Accepted:
25
August
2008
The effect of next-nearest-neighbor (nnn) hopping on the
spin and charge structures around vortices in underdoped high-temperature superconductors is studied at finite temperature by
numerically solving the Bogoliubov-de Gennes equations based on a model Hamiltonian with competing antiferromagnetic spin density wave
(SDW) and d-wave superconductivity orders. We show that
one-dimensional (1D) y- or x-axis
oriented stripes for the SDW
and the associated charge density wave (CDW) exist for small nnn hopping strengths. A coexistence of both y- and x-axisoriented
stripes may occur for a relatively large nnn hopping strength. The two-dimensional (2D) spatial modulations with fourfold symmetry can be obtained with further enlarging nnn hopping strength, implying the possible existence of 2D checkerboard-like SDW and CDW orders.
In addition, a transition of “1D stripe to 2D checkerboard-like pattern” can take place with increasing temperature.
PACS: 74.20.-z – Theories and models of superconducting state / 74.25.Jb – Electronic structure / 74.25.Ha – Magnetic properties
© EPLA, 2008
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.