TITLE

Spin blockade in ferromagnetic nanocontacts

AUTHOR(S)
Zhuravlev, M. Ye; Tsymbal, E.Y.; Jaswal, S.S.; Vedyayev, A.V.; Dieny, B.
PUB. DATE
October 2003
SOURCE
Applied Physics Letters;10/27/2003, Vol. 83 Issue 17, p3534
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using a free-electron model and a linear response theory we investigate spin-dependent electronic transport in magnetic nanocontacts in the ballistic regime of conduction. We emphasize the fact that in atomic-size ferromagnetic contacts it is possible to achieve the conductance value of e[sup 2]/h, which implies a fully spin-polarized electric current. We explore some consequences of this phenomenon. In particular, we show that the presence of a nonmagnetic region in the nanocontact separating two ferromagnetic electrodes can lead to a spin blockade resulting in very large values of magnetoresistance. © 2003 American Institute of Physics.
ACCESSION #
11123014

 

Related Articles

  • Graphene Nanoribbons with End- and Side-Contacted Electrodes. Krompiewski, S. // Acta Physica Polonica, A.;May/Jun2012, Vol. 121 Issue 5/6, p1216 

    This contribution reports on theoretical studies of electronic transport through graphene nanoribbons in the two-terminal geometry. The method combines the Landauer-type formalism with Green's function technique within the framework of the standard tight-binding model. The aim of this study is...

  • Spin polarization of a Ferromagnetic Narrow Gap p-(In,Mn)As Obtained from Andreev Reflection Spectroscopy. Akazaki, T.; Munekata, H.; Yokoyama, T.; Tanaka, Y.; Takayanagi, H. // AIP Conference Proceedings;12/28/2011, Vol. 1416 Issue 1, p100 

    Spin-polarized carrier transport across Nb/p-(In,Mn)As junctions has been studied. Suppressions of conductance in the superconductor sub-gap region and conductance peaks at the bias voltage around the edge of the sub-gap are observed. These features are well reproduced by a newly modified BTK...

  • Electron transport processes close to magnetic axis in tokamaks. Shaing, K.C.; Hazeltine, R.D. // Physics of Plasmas;May97, Vol. 4 Issue 5, p1375 

    Derives electron transport fluxes valid in the region close to magnetic axis in tokamaks from the moment equation approach. Reduction of electrical conductivity from its classical value; Observation that the fraction of the trapped particles is finite in the region close to the magnetic axis.

  • High-quality resonant tunneling through a random multibarrier superlattice. Shijie Xiong // Applied Physics Letters;7/5/1993, Vol. 63 Issue 1, p81 

    Examines electron transmission by random multibarrier superlattice. Existence of electrons with special energies; Calculation of the current-voltage characteristics of the structure; Exhibition of differential conductivity in electrons with high energy.

  • Effect of spontaneous magnetization on the electrical conductivity of ferromagnet-based metallic... Kolesnichenko, Yu. A.; Dekhtyaruk, L.V. // Low Temperature Physics;Sep97, Vol. 23 Issue 9, p702 

    Studies the effect of spontaneous magnetization on the electrical conductivity of ferromagnet-based metallic multilayers (MML). Magnetic multilayer model and complete system of equations of the problem; Solution of the kinetic equation and general expression for electric current in MML; MML...

  • Electronic transport of benzothiophene-based chiral molecular solenoids studied by theoretical simulations. Tagami, Katsunori; Tsukuda, Masaru; Wada, Yasuo; Iwasaki, Tomokazu; Nishide, Hiroyuki // Journal of Chemical Physics;10/8/2003, Vol. 119 Issue 14, p7491 

    By the density-functional-derived tight-binding method, the electronic transport properties of two types of benzothiophene-based molecular wires, i.e., the linear and helical molecular wires have been investigated. In the molecular bridge system where these molecules are connected to the gold...

  • Ultrafast spintronics: Back to basics. Adachi, Hiroto // Nature Physics;Sep2015, Vol. 11 Issue 9, p707 

    The article focuses on the use of model of electron transport in metals. Topics discussed include paramagnetic transition metal palladium, ferromagnetic transition metal nickel, and spin dependence of the electrical conductivity. It discusses challenges of interpretation spin splitting observed...

  • Carrier induced ferromagnetic interactions and transport properties of p-Zn[sub (1-x)]Mn[sub x]Te epilayers. Ferrand, D.; Cibert, J.; Wasiela, A.; Bourgognon, C.; Tatarenko, S.; Fishman, G.; Koles´nik, S.; Jaroszyn´ski, J.; Dietl, T.; Barbara, B.; Dufeu, D. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p6451 

    The conductivity and Hall effect of p-type doped Zn[sub (1-x)]Mn[sub x]Te layers are described and analyzed in terms of a two-fluid model where part of the carriers are weakly localized as bound magnetic polarons. At low temperature, the Hall effect is dominated by the spin-dependent component...

  • Test of ballistic spin-polarized electron transport across ferromagnet/semiconductor Schottky interfaces. Hirohata, A.; Guertler, C. M.; Lew, W. S.; Xu, Y. B.; Bland, J. A. C.; Holmes, S. N. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7481 

    We previously reported highly efficient spin detection associated with spin filtering at single layer ferromagnet (FM)/GaAs interfaces (NiFe, Co, and Fe as the FM) using photoexcitation at room temperature, confirming that the Schottky barrier acts as a tunnel barrier. In order to consider...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics