High-T c Cooper-pair injection in a semiconductor-superconductor structure.
J Phys Condens Matter
; 32(47): 475502, 2020 Sep 10.
Article
em En
| MEDLINE
| ID: mdl-32914753
ABSTRACT
We observe Andreev reflection in a YBCO-GaN junction through differential conductance spectroscopy. A strong characteristic zero-bias peak was observed and persisted up to the critical temperature of the superconductor with a smaller superconducting order parameter Δ â¼ 1 meV. The presence of Andreev reflection with the small Δ in comparison to its value for high-T c superconductors forms an important milestone toward demonstration of superconducting proximity in high-T c/semiconductor junctions. Experimental results were then compared to the theoretical model with good agreement. Efficient injection of Cooper pairs into direct bandgap semiconducting structures, together with high transition temperature of YBCO, can pave the way to novel optoelectronics and quantum optical studies of high-T c materials.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
J Phys Condens Matter
Assunto da revista:
BIOFISICA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Israel