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Title: Electronegative ligands enhance charge transfer to Mn 12 single-molecule magnets deposited on graphene

Abstract

Combining single-molecule magnets (SMMs) and emergent two-dimensional substrates such as graphene may lead to device configurations that are promising for spintronics and quantum computing. Yet, to fully consider the unique features of SMMs anchored to two-dimensional substrates, the choice of ligand attachments, which could affect the magnetic and electronic properties, is critical. In this work, we focus on hybrid junctions comprising CVD-grown graphene and [Mn 12 O 12 (O 2 CR) 16 (H 2 O) 4 ]( R = CH 3 , CHCl 2 ) SMMs with different ligands. We find that [Mn 12 O 12 (O 2 CCH 3 ) 16 (H 2 O) 4 ] SMMs barely change the graphene’s conductivity, while [Mn 12 O 12 (O 2 CCHCl 2 ) 16 (H 2 O) 4 ] SMMs with more electronegative ligands, by means of charge transfer, remarkably modify the electronic transport in graphene as revealed by gate-voltage dependent magnetotransport measurements.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Florida, Gainesville, FL (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Molecular Magnetic Quantum Materials (M2QM); Univ. of Florida, Gainesville, FL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1601768
Alternate Identifier(s):
OSTI ID: 1599260
Grant/Contract Number:  
SC0019330
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 127; Journal Issue: 6; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Zhu, Xiaochen, Hale, Ashlyn, Christou, George, and Hebard, Arthur F. Electronegative ligands enhance charge transfer to Mn12 single-molecule magnets deposited on graphene. United States: N. p., 2020. Web. doi:10.1063/1.5128329.
Zhu, Xiaochen, Hale, Ashlyn, Christou, George, & Hebard, Arthur F. Electronegative ligands enhance charge transfer to Mn12 single-molecule magnets deposited on graphene. United States. https://doi.org/10.1063/1.5128329
Zhu, Xiaochen, Hale, Ashlyn, Christou, George, and Hebard, Arthur F. Wed . "Electronegative ligands enhance charge transfer to Mn12 single-molecule magnets deposited on graphene". United States. https://doi.org/10.1063/1.5128329. https://www.osti.gov/servlets/purl/1601768.
@article{osti_1601768,
title = {Electronegative ligands enhance charge transfer to Mn12 single-molecule magnets deposited on graphene},
author = {Zhu, Xiaochen and Hale, Ashlyn and Christou, George and Hebard, Arthur F.},
abstractNote = {Combining single-molecule magnets (SMMs) and emergent two-dimensional substrates such as graphene may lead to device configurations that are promising for spintronics and quantum computing. Yet, to fully consider the unique features of SMMs anchored to two-dimensional substrates, the choice of ligand attachments, which could affect the magnetic and electronic properties, is critical. In this work, we focus on hybrid junctions comprising CVD-grown graphene and [Mn 12O 12(O 2CR) 16(H 2O) 4]( R = CH 3 , CHCl 2) SMMs with different ligands. We find that [Mn 12O 12(O 2CCH 3) 16(H 2O) 4] SMMs barely change the graphene’s conductivity, while [Mn 12O 12(O 2CCHCl 2) 16(H 2O) 4] SMMs with more electronegative ligands, by means of charge transfer, remarkably modify the electronic transport in graphene as revealed by gate-voltage dependent magnetotransport measurements.},
doi = {10.1063/1.5128329},
url = {https://www.osti.gov/biblio/1601768}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 6,
volume = 127,
place = {United States},
year = {2020},
month = {2}
}

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