Work

Impurity-Induced Tuning of Quantum-Well States in Spin-Dependent Resonant Tunneling

Year: 2004

Type: article

Abstract: We report exact model calculations of the spin-dependent tunneling in double magnetic tunnel junctions in the presence of impurities in the well. We show that the impurity can tune selectively the spin channels giving rise to a wide variety of interesting and novel transport phenomena. The tunneling magnetoresistance, the spin polarization, and the local current can be dramatically enhanced or suppressed by impurities. The underlying mechanism is the impurity-induced shift of the quantum well states (QWSs), which depends on the impurity potential, impurity position, and the symmetry of the QWS.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.93.046603

Authors: Alan Kalitsov, A. Coho, Nicholas Kioussis, Anatoly Vedyayev, M. Chshiev, A. Granovsky

Institutions: California State University, Northridge, Lomonosov Moscow State University, Virginia Tech

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: W2093640263

FWCI: 0.612

Cites: 19

Cited by: 13

Related to: 10