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Title: Non-local magnetoresistance in YIG/Pt nanostructures

Abstract

We study the local and non-local magnetoresistance of thin Pt strips deposited onto yttrium iron garnet. The local magnetoresistive response, inferred from the voltage drop measured along one given Pt strip upon current-biasing it, shows the characteristic magnetization orientation dependence of the spin Hall magnetoresistance. We simultaneously also record the non-local voltage appearing along a second, electrically isolated, Pt strip, separated from the current carrying one by a gap of a few 100 nm. The corresponding non-local magnetoresistance exhibits the symmetry expected for a magnon spin accumulation-driven process, confirming the results recently put forward by Cornelissen et al. [“Long-distance transport of magnon spin information in a magnetic insulator at room temperature,” Nat. Phys. (published online 14 September 2015)]. Our magnetotransport data, taken at a series of different temperatures as a function of magnetic field orientation, rotating the externally applied field in three mutually orthogonal planes, show that the mechanisms behind the spin Hall and the non-local magnetoresistance are qualitatively different. In particular, the non-local magnetoresistance vanishes at liquid Helium temperatures, while the spin Hall magnetoresistance prevails.

Authors:
; ; ;  [1]; ;  [1];  [1]
  1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Walther-Meißner-Str. 8, 85748 Garching (Germany)
Publication Date:
OSTI Identifier:
22485967
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CURRENTS; DEPOSITS; ELECTRIC POTENTIAL; FERRITE GARNETS; MAGNETIC FIELDS; MAGNETIZATION; MAGNETORESISTANCE; NANOSTRUCTURES; ORIENTATION; SPIN; SYMMETRY; TEMPERATURE RANGE 0273-0400 K

Citation Formats

Goennenwein, Sebastian T. B.,, Pernpeintner, Matthias, Gross, Rudolf, Huebl, Hans, Nanosystems Initiative Munich, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Schlitz, Richard, Ganzhorn, Kathrin, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, and Althammer, Matthias. Non-local magnetoresistance in YIG/Pt nanostructures. United States: N. p., 2015. Web. doi:10.1063/1.4935074.
Goennenwein, Sebastian T. B.,, Pernpeintner, Matthias, Gross, Rudolf, Huebl, Hans, Nanosystems Initiative Munich, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Schlitz, Richard, Ganzhorn, Kathrin, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, & Althammer, Matthias. Non-local magnetoresistance in YIG/Pt nanostructures. United States. https://doi.org/10.1063/1.4935074
Goennenwein, Sebastian T. B.,, Pernpeintner, Matthias, Gross, Rudolf, Huebl, Hans, Nanosystems Initiative Munich, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Schlitz, Richard, Ganzhorn, Kathrin, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, and Althammer, Matthias. 2015. "Non-local magnetoresistance in YIG/Pt nanostructures". United States. https://doi.org/10.1063/1.4935074.
@article{osti_22485967,
title = {Non-local magnetoresistance in YIG/Pt nanostructures},
author = {Goennenwein, Sebastian T. B., and Pernpeintner, Matthias and Gross, Rudolf and Huebl, Hans and Nanosystems Initiative Munich and Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching and Schlitz, Richard and Ganzhorn, Kathrin and Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching and Althammer, Matthias},
abstractNote = {We study the local and non-local magnetoresistance of thin Pt strips deposited onto yttrium iron garnet. The local magnetoresistive response, inferred from the voltage drop measured along one given Pt strip upon current-biasing it, shows the characteristic magnetization orientation dependence of the spin Hall magnetoresistance. We simultaneously also record the non-local voltage appearing along a second, electrically isolated, Pt strip, separated from the current carrying one by a gap of a few 100 nm. The corresponding non-local magnetoresistance exhibits the symmetry expected for a magnon spin accumulation-driven process, confirming the results recently put forward by Cornelissen et al. [“Long-distance transport of magnon spin information in a magnetic insulator at room temperature,” Nat. Phys. (published online 14 September 2015)]. Our magnetotransport data, taken at a series of different temperatures as a function of magnetic field orientation, rotating the externally applied field in three mutually orthogonal planes, show that the mechanisms behind the spin Hall and the non-local magnetoresistance are qualitatively different. In particular, the non-local magnetoresistance vanishes at liquid Helium temperatures, while the spin Hall magnetoresistance prevails.},
doi = {10.1063/1.4935074},
url = {https://www.osti.gov/biblio/22485967}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 17,
volume = 107,
place = {United States},
year = {Mon Oct 26 00:00:00 EDT 2015},
month = {Mon Oct 26 00:00:00 EDT 2015}
}