Literature DB >> 28690361

Kondo Effect in Magnetic Tunnel Junctions with an AlOx Tunnel Barrier.

Chao Zheng1, Robert D Shull2, P J Chen2, Philip W T Pong1.   

Abstract

The influence of the magnetization configuration on Kondo effect in magnetic tunnel junction is investigated. In the parallel configuration, an additional resistance contribution (R*) below 40 K exhibits a logarithmic temperature dependence, indicating the presence of Kondo effect. However, in the anti-parallel configuration, the Kondo-effect-associated spin-flip scattering has a nontrivial contribution to the tunneling current, which compensates the reduction of the current directly caused by Kondo scattering, making R* disappear. These results indicate that suppression and restoration of Kondo effect can be experimentally achieved by altering the magnetization configuration, enhancing our understanding of the role of Kondo effect in spin-dependent transport.

Entities:  

Keywords:  Kondo effect; magnetic tunnel junction; magnetization configuration; spin-flip scattering

Year:  2016        PMID： 28690361      PMCID： PMC5497476          DOI： 10.1016/j.physleta.2016.05.001

Source DB:  PubMed          Journal:  Phys Lett A        ISSN： 0375-9601            Impact factor:   2.654


  9 in total

1.  Mechanical control of spin states in spin-1 molecules and the underscreened Kondo effect.

Authors:  J J Parks; A R Champagne; T A Costi; W W Shum; A N Pasupathy; E Neuscamman; S Flores-Torres; P S Cornaglia; A A Aligia; C A Balseiro; G K-L Chan; H D Abruña; D C Ralph
Journal:  Science       Date:  2010-06-11       Impact factor: 47.728

2.  Kondo effect in magnetic tunnel junctions.

Authors:  K I Lee; S J Joo; J H Lee; K Rhie; Tae-Suk Kim; W Y Lee; K H Shin; B C Lee; P LeClair; J-S Lee; J-H Park
Journal:  Phys Rev Lett       Date:  2007-03-06       Impact factor: 9.161

3.  Crossover from Kondo-assisted suppression to co-tunneling enhancement of tunneling magnetoresistance via ferromagnetic nanodots in MgO tunnel barriers.

Authors:  Hyunsoo Yang; See-Hun Yang; Stuart S P Parkin
Journal:  Nano Lett       Date:  2007-12-21       Impact factor: 11.189

4.  Nonequilibrium Zeeman splitting in quantum transport through nanoscale junctions.

Authors:  Sebastian Schmitt; Frithjof B Anders
Journal:  Phys Rev Lett       Date:  2011-07-25       Impact factor: 9.161

5.  Single-molecule transistors.

Authors:  Mickael L Perrin; Enrique Burzurí; Herre S J van der Zant
Journal:  Chem Soc Rev       Date:  2015-02-21       Impact factor: 54.564

6.  Effects of magnetic doping on weak antilocalization in narrow Bi2Se3 nanoribbons.

Authors:  Judy J Cha; Martin Claassen; Desheng Kong; Seung Sae Hong; Kristie J Koski; Xiao-Liang Qi; Yi Cui
Journal:  Nano Lett       Date:  2012-07-25       Impact factor: 11.189

7.  Kondo physics in non-local metallic spin transport devices.

Authors:  L O'Brien; M J Erickson; D Spivak; H Ambaye; R J Goyette; V Lauter; P A Crowell; C Leighton
Journal:  Nat Commun       Date:  2014-05-29       Impact factor: 14.919

8.  Tunable Kondo effect in a double quantum dot coupled to ferromagnetic contacts.

Authors:  Rok Žitko; Jong Soo Lim; Rosa López; Jan Martinek; Pascal Simon
Journal:  Phys Rev Lett       Date:  2012-04-20       Impact factor: 9.161

9.  Unexpected observation of spatially separated Kondo scattering and ferromagnetism in Ta alloyed anatase TiO2 thin films.

Authors:  T P Sarkar; K Gopinadhan; M Motapothula; S Saha; Z Huang; S Dhar; A Patra; W M Lu; F Telesio; I Pallecchi; D Marré; T Venkatesan
Journal:  Sci Rep       Date:  2015-08-12       Impact factor: 4.379
  9 in total

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