Online citations, reference lists, and bibliographies.
Please confirm you are human
(Sign Up for free to never see this)
← Back to Search

Conducting Ballistic Magnetoresistance And Tunneling Magnetoresistance: Pinholes And Tunnel Barriers

N. García
Published 2000 · Physics

Save to my Library
Download PDF
Analyze on Scholarcy
This letter shows that conducting ballistic and tunneling magnetoresistances have identical physical treatments and, therefore, it is not possible to distinguish whether an experiment is measuring, in oxide barriers, electron conduction through pinholes or tunneling because both types of conduction are governed by the same physics. Currents in both cases are calculated by matching wave functions at the electrodes (both are ballistic). Therefore, pinholes or small ballistic nanocontacts in the tunnel barrier allow conducting ballistic electrons that account for most of the current. We also show that, in the case of nonsuperconducting materials, e.g., magnetic materials, current–voltage characteristics are not suitable to distinguish one process from the other.
This paper references

This paper is referenced by
Chapter One Spin-Dependent Tunneling in Magnetic Junctions
H.J.M. Swagten (2007)
A nonuniform stationary state of a magnetic junction under the conditions of switching by spin-polarized current
Y. V. Gulyaev (2006)
Quantitative x-ray photoelectron spectroscopy study of Al/AlOx bilayers
X. Batlle (2002)
A new rf plasma oxidation method for the insulating AlOx barrier in magnetic tunneling junctions
Kapsoo Yoon (2002)
Pinholes and temperature-dependent transport properties of MgO magnetic tunnel junctions
J. Ventura (2008)
Low voltage I–V characteristics in magnetic tunneling junctions
G. Cabrera (2002)
Competing spin-dependent conductance channels in underoxidized tunnel junctions
J. Ventura (2007)
Spontaneous transformations of the magnetic structure of a film nanocontact
A. Zvezdin (2002)
Ballistic magnetoresistance in a nanocontact between a Ni cluster and a magnetic thin film
M. Muñoz (2001)
Finite-size effects in fine particles: magnetic and transport properties
X. Batlle (2002)
Inverse TMR Effect in Co0.9Fe0.1/SrTiO3/La0.7Sr0.3MnO3 Tunnel Junctions
M. Sugiyama (2001)
Temperature dependent resistance of magnetic tunnel junctions as a quality proof of the barrier
U. Rüdiger (2001)
Enhanced performance of CoFe/AlOx/CoFe magnetic tunnel junctions prepared by an off-axis rf remote plasma oxidation method
Kapsoo Yoon (2002)
Spin-dependent two-level resistance fluctuations in underoxidized tunnel junctions
J. Ventura (2006)
Magnetic properties of Fe microstructures with focused ion beam-fabricated nano-constrictions
I. Roshchin (2001)
The effect of pinhole formation/growth on the tunnel magnetoresistance of MgO-based magnetic tunnel junctions
J. Teixeira (2009)
Quantum transport properties of a two-channel atomic-sized magnetic contact
C. A. Dartora (2005)
The use of Simmons’ equation to quantify the insulating barrier parameters in Al/AlOx/Al tunnel junctions
L. S. Dorneles (2003)
Ferromagnetic tunneling junctions at low voltages: Elastic versus inelastic scattering at T=0 °K
C. A. Dartora (2004)
Spin-dependent transmission coefficients for magnetic tunnel junctions: Transport properties and temperature dependence
C. A. Dartora (2005)
Pinholes may mimic tunneling
D. Rabson (2000)
Diagnosis and location of pinhole defects in tunnel junctions using only electrical measurements
Z. Zhang (2004)
Universal scaling of ballistic magnetoresistance in magnetic nanocontacts.
S. Chung (2002)
Semantic Scholar Logo Some data provided by SemanticScholar