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Title: Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform

Abstract

A device architecture utilizing a single-molecule magnet (SMM) as a device element between two ferromagnetic electrodes may open vast opportunities to create novel molecular spintronics devices. Here, we report a method of connecting an SMM to the ferromagnetic electrodes. We utilized a nickel (Ni)–AlOx–Ni magnetic tunnel junction (MTJ) with the exposed side edges as a test bed. In the present work, we utilized an SMM with a hexanuclear [Mn63-O)2(H2N-sao)6(6-atha)2(EtOH)6] [H2N-saoH = salicylamidoxime, 6-atha = 6-acetylthiohexanoate] complex that is attached to alkane tethers terminated with thiols. These Mn-based molecules were electrochemically bonded between the two Ni electrodes of an exposed-edge tunnel junction, which was produced by the lift-off method. Here, the SMM-treated MTJ exhibited current enhancement and transitory current suppression at room temperature. Monte Carlo simulation was utilized to understand the transport properties of our molecular spintronics device.

Authors:
ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [2]
  1. Department of Mechanical Engineering, University of the District of Columbia, Washington DC-20008, USA
  2. Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain
Publication Date:
Research Org.:
University of the District of Columbia, Washington, DC (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1607829
Alternate Identifier(s):
OSTI ID: 1638592
Grant/Contract Number:  
NA0003945; FOA-0003945
Resource Type:
Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Name: RSC Advances Journal Volume: 10 Journal Issue: 22; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United Kingdom
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Tyagi, Pawan, Riso, Christopher, Amir, Uzma, Rojas-Dotti, Carlos, and Martínez-Lillo, Jose. Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform. United Kingdom: N. p., 2020. Web. doi:10.1039/C9RA09003G.
Tyagi, Pawan, Riso, Christopher, Amir, Uzma, Rojas-Dotti, Carlos, & Martínez-Lillo, Jose. Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform. United Kingdom. https://doi.org/10.1039/C9RA09003G
Tyagi, Pawan, Riso, Christopher, Amir, Uzma, Rojas-Dotti, Carlos, and Martínez-Lillo, Jose. Tue . "Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform". United Kingdom. https://doi.org/10.1039/C9RA09003G.
@article{osti_1607829,
title = {Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform},
author = {Tyagi, Pawan and Riso, Christopher and Amir, Uzma and Rojas-Dotti, Carlos and Martínez-Lillo, Jose},
abstractNote = {A device architecture utilizing a single-molecule magnet (SMM) as a device element between two ferromagnetic electrodes may open vast opportunities to create novel molecular spintronics devices. Here, we report a method of connecting an SMM to the ferromagnetic electrodes. We utilized a nickel (Ni)–AlOx–Ni magnetic tunnel junction (MTJ) with the exposed side edges as a test bed. In the present work, we utilized an SMM with a hexanuclear [Mn6(μ3-O)2(H2N-sao)6(6-atha)2(EtOH)6] [H2N-saoH = salicylamidoxime, 6-atha = 6-acetylthiohexanoate] complex that is attached to alkane tethers terminated with thiols. These Mn-based molecules were electrochemically bonded between the two Ni electrodes of an exposed-edge tunnel junction, which was produced by the lift-off method. Here, the SMM-treated MTJ exhibited current enhancement and transitory current suppression at room temperature. Monte Carlo simulation was utilized to understand the transport properties of our molecular spintronics device.},
doi = {10.1039/C9RA09003G},
journal = {RSC Advances},
number = 22,
volume = 10,
place = {United Kingdom},
year = {2020},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1039/C9RA09003G

Citation Metrics:
Cited by: 1 work
Citation information provided by
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Figures / Tables:

Fig. 1 Fig. 1: 3D view of MTJ with exposed side edges (a) before and (b) after the bridging of SMM channels. (c) Magnified view of one SMM covalently bonded with two Ni electrodes. (d) SEM of a complete SMM-based MTJMSD. (e) View along the crystallographic [111] direction of the molecular structuremore » of the SMM. H atoms and ethanol molecules of crystallization have been omitted for clarity. Color code: pink, Mn; yellow, S; red, O; blue, N; black, C.« less

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Works referenced in this record:

The Effect of Crystal Packing and Re IV Ions on the Magnetisation Relaxation of [Mn 6 ]-Based Molecular Magnets
journal, May 2015

  • Martínez-Lillo, José; Cano, Joan; Wernsdorfer, Wolfgang
  • Chemistry - A European Journal, Vol. 21, Issue 24
  • DOI: 10.1002/chem.201500439

Spin-Tunneling in Ferromagnetic Junctions
journal, August 1999


Berry-Phase Oscillations of the Kondo Effect in Single-Molecule Magnets
journal, September 2006


Molecular spintronics devices exhibiting properties of a solar cell
journal, September 2019


Giant Tunneling Magnetoresistance in MgO-Based Magnetic Tunnel Junctions
journal, March 2008


Paramagnetic molecule induced strong antiferromagnetic exchange coupling on a magnetic tunnel junction based molecular spintronics device
journal, July 2015


Molecular electronics: connection across nano-sized electrode gaps
journal, January 2007

  • Ashwell, Geoffrey J.; Wierzchowiec, Piotr; Bartlett, Catherine J.
  • Chemical Communications, Issue 12
  • DOI: 10.1039/b615538c

Molecular Electrodes at the Exposed Edge of Metal/Insulator/Metal Trilayer Structures
journal, April 2007

  • Tyagi, Pawan; Li, Dongfeng; Holmes, Stephen M.
  • Journal of the American Chemical Society, Vol. 129, Issue 16
  • DOI: 10.1021/ja065789d

Giant tunnel magnetoresistance in magnetic tunnel junctions with a crystalline MgO(0 0 1) barrier
journal, October 2007


Activating the molecular spinterface
journal, April 2017

  • Cinchetti, Mirko; Dediu, V. Alek; Hueso, Luis E.
  • Nature Materials, Vol. 16, Issue 5
  • DOI: 10.1038/nmat4902

Kondo Effect in the Presence of Itinerant-Electron Ferromagnetism Studied with the Numerical Renormalization Group Method
journal, December 2003


The Kondo Effect in the Presence of Ferromagnetism
journal, October 2004


A family of cationic oxime-based hexametallic manganese( iii ) single-molecule magnets
journal, January 2014

  • Martínez-Lillo, José; Dolan, Neil; Brechin, Euan K.
  • Dalton Trans., Vol. 43, Issue 11
  • DOI: 10.1039/C3DT52640B

Taguchi Design of Experiment Enabling the Reduction of Spikes on the Sides of Patterned Thin Films for Tunnel Junction Fabrication
journal, January 2017

  • Tyagi, Pawan; Friebe, Edward; Jacques, Beachrhell
  • MRS Advances, Vol. 2, Issue 52
  • DOI: 10.1557/adv.2017.456

Large resistance change on magnetic tunnel junction based molecular spintronics devices
journal, May 2018


Magnetic field control of an electron tunnel current through a molecular wire
journal, March 1998

  • Petrov, E. G.; Tolokh, I. S.; May, V.
  • The Journal of Chemical Physics, Vol. 108, Issue 11
  • DOI: 10.1063/1.475851

Spin filtering effects in monocristalline Fe/MgO/Fe magnetic tunnel junctions
journal, January 2006

  • Tiusan, C.; Faure-Vincent, J.; Sicot, M.
  • Materials Science and Engineering: B, Vol. 126, Issue 2-3
  • DOI: 10.1016/j.mseb.2005.09.054

Magnetic tunnel junction based molecular spintronics devices exhibiting current suppression at room temperature
journal, January 2019


Molecular spintronics using single-molecule magnets
journal, March 2008

  • Bogani, Lapo; Wernsdorfer, Wolfgang
  • Nature Materials, Vol. 7, Issue 3
  • DOI: 10.1038/nmat2133

Addressing the challenges of using ferromagnetic electrodes in the magnetic tunnel junction-based molecular spintronics devices
journal, November 2015

  • Tyagi, Pawan; Friebe, Edward; Baker, Collin
  • Journal of Nanoparticle Research, Vol. 17, Issue 11
  • DOI: 10.1007/s11051-015-3261-5

Criteria for ferromagnetic–insulator–ferromagnetic tunneling
journal, February 2002

  • Åkerman, Johan J.; Escudero, R.; Leighton, C.
  • Journal of Magnetism and Magnetic Materials, Vol. 240, Issue 1-3
  • DOI: 10.1016/S0304-8853(01)00712-0

The rise of spinterface science
journal, June 2010


Single molecule magnets for quantum computation
journal, May 2007


Electron Transport through Single Mn 12 Molecular Magnets
journal, May 2006


Thioester-functionalised and oxime-based hexametallic manganese( iii ) single-molecule magnets
journal, January 2017

  • Rojas-Dotti, Carlos; Martínez-Lillo, José
  • RSC Adv., Vol. 7, Issue 77
  • DOI: 10.1039/C7RA09841C

Mechanism of ultrathin tunnel barrier failure due to mechanical-stress-induced nanosized hillocks and voids
journal, May 2010

  • Tyagi, Pawan; Hinds, Bruce J.
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 28, Issue 3
  • DOI: 10.1116/1.3406143

Tunneling path toward spintronics
journal, February 2011


Multilayer edge molecular electronics devices: a review
journal, January 2011


Impact of interfacial roughness on tunneling conductance and extracted barrier parameters
journal, January 2007

  • Miller, Casey W.; Li, Zhi-Pan; Åkerman, Johan
  • Applied Physics Letters, Vol. 90, Issue 4
  • DOI: 10.1063/1.2431443

A new family of oxime-based hexanuclear manganese(iii) single molecule magnets with high anisotropy energy barriers
journal, January 2010

  • Tomsa, Adrian-Raul; Martínez-Lillo, José; Li, Yanling
  • Chemical Communications, Vol. 46, Issue 28
  • DOI: 10.1039/c0cc00485e

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.