期刊
PHYSICAL REVIEW B
卷 82, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.161411
关键词
-
资金
- DOE [DE-SC0002765]
- U.S. Department of Energy (DOE) [DE-SC0002765] Funding Source: U.S. Department of Energy (DOE)
The concept of the Kondo box describes a single spin, antiferromagnetically coupled to a quantum dot with a finite level spacing. Here, a Kondo box is formed in a carbon nanotube interacting with a localized electron. We investigate the spins of its first few eigenstates and compare them to a recent theory. In an open Kondo-box, strongly coupled to the leads, we observe a nonmonotonic temperature dependence of the nanotube conductance, which results from a competition between the Kondo-box singlet and the conventional Kondo state that couples the nanotube to the leads.
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