Scheller, C. P. and Liu, T. -M. and Barak, G. and Yacoby, A. and Pfeiffer, L. N. and West, K. W. and Zumbühl, D. M.. (2014) Possible Evidence for Helical Nuclear Spin Order in GaAs Quantum Wires. Physical review letters, Vol. 112, H. 6 , 066801.
Full text not available from this repository.
Official URL: http://edoc.unibas.ch/dok/A6223314
Downloads: Statistics Overview
Abstract
We present transport measurements of cleaved edge overgrowth GaAs quantum wires. The conductance of the first mode reaches 2 e^2/h at high temperatures T < 10 K, as expected. As T is lowered, the conductance is gradually reduced to 1 e^2/h, becoming T-independent at T > 0.1 K, while the device cools far below 0.1 K. This behavior is seen in several wires, is independent of density, and not altered by moderate magnetic fields B. The conductance reduction by a factor of two suggests lifting of the electron spin degeneracy in absence of B. Our results are consistent with theoretical predictions for helical nuclear magnetism in the Luttinger liquid regime.
Faculties and Departments: | 05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Quantenphysik (Zumbühl) |
---|---|
UniBasel Contributors: | Zumbühl, Dominik M |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Last Modified: | 06 Feb 2015 09:58 |
Deposited On: | 06 Feb 2015 09:58 |
Repository Staff Only: item control page