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Title: Anomalous magnetic behavior at the graphene/Co interface

Abstract

An intensive theoretical study on the interaction between graphene and transition metal atom has been carried out; however, its experimental verification is still lacking. To explore the theoretical prediction of antiferromagnetic coupling due to charge transfer between graphene and cobalt, epitaxial layer of cobalt is grown on graphene surface. Predicted antiferromagnetic interaction with Neel temperature (T{sub N} ∼ 32 K) which anomalously shifts to higher temperature (34 K) and becomes more prominent under application of magnetic field of 1 T is reported. Lowering of magnetoresistance as a consequence of this antiferromagnetic coupling at the interface is also observed.

Authors:
Publication Date:
OSTI Identifier:
22311083
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; COBALT; COUPLING; EPITAXY; GRAPHENE; INTERACTIONS; INTERFACES; LAYERS; MAGNETIC FIELDS; MAGNETORESISTANCE; NEEL TEMPERATURE; SURFACES; TEMPERATURE RANGE 0013-0065 K

Citation Formats

Mandal, Sumit, and Saha, Shyamal K., E-mail: cnssks@iacs.res.in. Anomalous magnetic behavior at the graphene/Co interface. United States: N. p., 2014. Web. doi:10.1063/1.4890382.
Mandal, Sumit, & Saha, Shyamal K., E-mail: cnssks@iacs.res.in. Anomalous magnetic behavior at the graphene/Co interface. United States. https://doi.org/10.1063/1.4890382
Mandal, Sumit, and Saha, Shyamal K., E-mail: cnssks@iacs.res.in. 2014. "Anomalous magnetic behavior at the graphene/Co interface". United States. https://doi.org/10.1063/1.4890382.
@article{osti_22311083,
title = {Anomalous magnetic behavior at the graphene/Co interface},
author = {Mandal, Sumit and Saha, Shyamal K., E-mail: cnssks@iacs.res.in},
abstractNote = {An intensive theoretical study on the interaction between graphene and transition metal atom has been carried out; however, its experimental verification is still lacking. To explore the theoretical prediction of antiferromagnetic coupling due to charge transfer between graphene and cobalt, epitaxial layer of cobalt is grown on graphene surface. Predicted antiferromagnetic interaction with Neel temperature (T{sub N} ∼ 32 K) which anomalously shifts to higher temperature (34 K) and becomes more prominent under application of magnetic field of 1 T is reported. Lowering of magnetoresistance as a consequence of this antiferromagnetic coupling at the interface is also observed.},
doi = {10.1063/1.4890382},
url = {https://www.osti.gov/biblio/22311083}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 2,
volume = 105,
place = {United States},
year = {Mon Jul 14 00:00:00 EDT 2014},
month = {Mon Jul 14 00:00:00 EDT 2014}
}