Semantic Scholar Open Access 2003 32 sitasi

Kondo effect and spin filtering in triangular artificial atoms

G. Zaránd A. Brataas D. Goldhaber-Gordon

Lihat Sumber DOI

Abstrak

Abstract We studied, strongly correlated states in triangular artificial atoms. Symmetry-driven orbital degeneracy of the single particle states can give rise to an SU (4) Kondo state with entangled orbital and spin degrees of freedom, and a characteristic phase shift δ =π/4. Upon application of a Zeeman field, a purely orbital Kondo state is formed with somewhat smaller Kondo temperature and a fully polarized current through the device. The Kondo temperatures are in the measurable range. The triangular atom also provides a tool to systematically study the singlet–triplet transitions observed in recent experiments [Phys. Rev. Lett., 88 (2002) 126803, cond-mat/0208268 (2002)].

Topik & Kata Kunci

Physics

Penulis (3)

G. Zaránd

A. Brataas

D. Goldhaber-Gordon

Format Sitasi

APA MLA BibTeX

Zaránd, G., Brataas, A., Goldhaber-Gordon, D. (2003). Kondo effect and spin filtering in triangular artificial atoms. https://doi.org/10.1016/S0038-1098(03)00180-7

Akses Cepat

Lihat di Sumber doi.org/10.1016/S0038-1098(03)00180-7

Informasi Jurnal

Tahun Terbit: 2003
Bahasa: en
Total Sitasi: 32×
Sumber Database: Semantic Scholar
DOI: 10.1016/S0038-1098(03)00180-7
Akses: Open Access ✓