Description: Spin-1/2 Kondo effect in an InAs nanowire quantum dot: Unitary limit, conductance scaling, and Zeeman splitting

This title appears in the Scientific Report : 2011

Spin-1/2 Kondo effect in an InAs nanowire quantum dot: Unitary limit, conductance scaling, and Zeeman splitting

We report on a comprehensive study of spin-1/2 Kondo effect in a strongly coupled quantum dot realized in a high-quality InAs nanowire. The nanowire quantum dot is relatively symmetrically coupled to its two leads, so the Kondo effect reaches the unitary limit. The measured Kondo conductance demonst...

Personal Name(s):	Kretinin, A.V.
	Shtrikman, H. / Goldhaber-Gordon, D. / Hanl, M. / Weichselbaum, A. / von Delft, J. / Costi, T. / Mahalu, D.
Contributing Institute:	Theoretische Nanoelektronik; PGI-2 JARA-HPC Theoretische Nanoelektronik; IAS-3
Published in:	Physical Review B Physical review / B, 84 84 (2011 2011) 24 24, S. 245316 245316
Imprint:	College Park, Md. APS 2011
DOI:	10.1103/PhysRevB.84.245316
Document Type:	Journal Article
Research Program:	Thermoelectric properties of self-assembled quantum dots and oxide heterostructure interfaces (jiff23_20100501) Grundlagen für zukünftige Informationstechnologien
Series Title:	Physical Review B 84
Subject (ZB):	J
Link:	Get full text OpenAccess OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.84.245316 in citations.
Please use the identifier: http://hdl.handle.net/2128/10893 in citations.

We report on a comprehensive study of spin-1/2 Kondo effect in a strongly coupled quantum dot realized in a high-quality InAs nanowire. The nanowire quantum dot is relatively symmetrically coupled to its two leads, so the Kondo effect reaches the unitary limit. The measured Kondo conductance demonstrates scaling with temperature, Zeeman magnetic field, and out-of-equilibrium bias. The suppression of the Kondo conductance with magnetic field is much stronger than would be expected based on a g-factor extracted from Zeeman splitting of the Kondo peak. This may be related to strong spin-orbit coupling in InAs.