Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-09-30
Nano Letters 10 (2), 455-460 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
10 pages, 8 figures
Scientific paper
10.1021/nl9031132
The Kondo effect has been observed in a single gate-tunable atom. The measurement device consists of a single As dopant incorporated in a Silicon nanostructure. The atomic orbitals of the dopant are tunable by the gate electric field. When they are tuned such that the ground state of the atomic system becomes a (nearly) degenerate superposition of two of the Silicon valleys, an exotic and hitherto unobserved valley Kondo effect appears. Together with the regular spin Kondo, the tunable valley Kondo effect allows for reversible electrical control over the symmetry of the Kondo ground state from an SU(2)- to an SU(4) -configuration.
Biesemans Serge
Blaauboer Miriam
Collaert Nadine
Lansbergen Gabriel P.
Rogge Sven
No associations
LandOfFree
Tunable Kondo effect in a single donor atom does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tunable Kondo effect in a single donor atom, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable Kondo effect in a single donor atom will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-590183