1.
Phys Rev Lett
; 102(11): 117001, 2009 Mar 20.
Article
in English
| MEDLINE
| ID: mdl-19392228
ABSTRACT
We demonstrate the existence of a novel superconducting state in high quality two-component MgB2 single crystalline superconductors where a unique combination of both type-1 (lambda{1}/xi{1}<1/sqrt[2]) and type-2 (lambda{2}/xi{2}>1/sqrt[2]) superconductor conditions is realized for the two components of the order parameter. This condition leads to a vortex-vortex interaction attractive at long distances and repulsive at short distances, which stabilizes unconventional stripe- and gossamerlike vortex patterns that we have visualized in this type-1.5 superconductor using Bitter decoration and also reproduced in numerical simulations.
2.
Phys Rev Lett
; 101(22): 229701; author reply 229702, 2008 Nov 28.
Article
in English
| MEDLINE
| ID: mdl-19113525