Highly efficient (Cs8V) superatom-based spin-polarizer

Authors

Haiying He, Michigan Technologies Institute
Ravindra Pandey, Michigan Technologies InstituteFollow
J. Ulises Reveles, Virginia Commonwealth UniversityFollow
Shiv N. Khanna, Virginia Commonwealth UniversityFollow
Shashi P. Karna, U.S. Army Research Laboratory

Document Type

Article

Original Publication Date

2009

Journal/Book/Conference Title

Applied Physics Letters

Volume

95

Issue

19

DOI of Original Publication

10.1063/1.3259646

Comments

Originally published at http://dx.doi.org/10.1063/1.3259646

Date of Submission

April 2015

Abstract

Quantum transport through molecules and the possibility to manipulate spin has generated tremendous excitement. Here, we demonstrate unusual spin transport through a molecule of twoCs8V magnetic superatoms. Calculations based on density functional theory and nonequilibrium Green’s function methods find a much higher current for the spin-down charge carriers relative to the spin-up carriers in the model Au–(Cs8V)–(Cs8V)–Au device system with almost 100% spin polarization, indicating a highly efficient spin polarizer. The new behavior is rooted in strong coupling of the localized magnetic core on V and the itinerant electrons of the Cs shell atoms leading to nearly full spin polarization.

Rights

He, H., Pandey, R., Reveles, J.U., et al. Highly efficient (Cs8V) superatom-based spin-polarizer. Applied Physics Letters, 95, 192104 (2009). Copyright © 2009 AIP Publishing LLC.

Is Part Of

VCU Physics Publications