Work

Measurement of spin polarization by Andreev reflection in ferromagnetic In1−xMnxSb epilayers

Year: 2004

Type: article

Abstract: We carried out point contact Andreev reflection (PCAR) spin spectroscopy measurements on epitaxially grown ferromagnetic In1−xMnxSb epilayers with a Curie temperature of ∼9 K. The spin sensitivity of PCAR in this material was demonstrated by parallel control studies on its nonmagnetic analog, In1−yBeySb. We found the conductance curves of the Sn point contacts with In1−yBeySb to be fairly conventional, with the possible presence of proximity-induced superconductivity effects at the lowest temperatures. These measurements provided control data for subsequent PCAR measurements on ferromagnetic In1−xMnxSb, which indicated spin polarization in In1−xMnxSb to be 52±3%.

Source: Applied Physics Letters

DOI: 10.1063/1.1760883

Authors: R. P. Panguluri, B. Nadgorny, T. Wojtowicz, W. L. Lim, X. Liu, J. K. Furdyna

Institutions: Wayne State University, University of Notre Dame, Institute of Physics, Polish Academy of Sciences

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1663604280

FWCI: 1.84

Cites: 20

Cited by: 26

Related to: 10