Evidence for spin-flip scattering and local moments in dilute fluorinated graphene

X. Hong, K. Zou, B. Wang, S. H. Cheng, Jun Zhu

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

The issue of whether local magnetic moments can be formed by introducing adatoms into graphene is of intense research interest because it opens the window to fundamental studies of magnetism in graphene, as well as of its potential spintronics applications. To investigate this question, we measure, by exploiting the well-established weak localization physics, the phase coherence length L Φ in dilute fluorinated graphene. L Φ reveals an unusual saturation below ∼10K, which cannot be explained by nonmagnetic origins. The corresponding phase-breaking rate increases with decreasing carrier density and increases with increasing fluorine density. These results provide strong evidence for spin-flip scattering and point to the existence of an adatom-induced local magnetic moment in fluorinated graphene. Our results will stimulate further investigations of magnetism and spintronics applications in adatom-engineered graphene.

Original languageEnglish (US)
Article number226602
JournalPhysical Review Letters
Volume108
Issue number22
DOIs
StatePublished - Jun 1 2012

Fingerprint

graphene
moments
adatoms
scattering
magnetic moments
phase coherence
fluorine
saturation
physics

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Hong, X. ; Zou, K. ; Wang, B. ; Cheng, S. H. ; Zhu, Jun. / Evidence for spin-flip scattering and local moments in dilute fluorinated graphene. In: Physical Review Letters. 2012 ; Vol. 108, No. 22.
@article{b1a16e657aa540b988563d6295037d51,
title = "Evidence for spin-flip scattering and local moments in dilute fluorinated graphene",
abstract = "The issue of whether local magnetic moments can be formed by introducing adatoms into graphene is of intense research interest because it opens the window to fundamental studies of magnetism in graphene, as well as of its potential spintronics applications. To investigate this question, we measure, by exploiting the well-established weak localization physics, the phase coherence length L Φ in dilute fluorinated graphene. L Φ reveals an unusual saturation below ∼10K, which cannot be explained by nonmagnetic origins. The corresponding phase-breaking rate increases with decreasing carrier density and increases with increasing fluorine density. These results provide strong evidence for spin-flip scattering and point to the existence of an adatom-induced local magnetic moment in fluorinated graphene. Our results will stimulate further investigations of magnetism and spintronics applications in adatom-engineered graphene.",
author = "X. Hong and K. Zou and B. Wang and Cheng, {S. H.} and Jun Zhu",
year = "2012",
month = "6",
day = "1",
doi = "10.1103/PhysRevLett.108.226602",
language = "English (US)",
volume = "108",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "22",

}

Evidence for spin-flip scattering and local moments in dilute fluorinated graphene. / Hong, X.; Zou, K.; Wang, B.; Cheng, S. H.; Zhu, Jun.

In: Physical Review Letters, Vol. 108, No. 22, 226602, 01.06.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evidence for spin-flip scattering and local moments in dilute fluorinated graphene

AU - Hong, X.

AU - Zou, K.

AU - Wang, B.

AU - Cheng, S. H.

AU - Zhu, Jun

PY - 2012/6/1

Y1 - 2012/6/1

N2 - The issue of whether local magnetic moments can be formed by introducing adatoms into graphene is of intense research interest because it opens the window to fundamental studies of magnetism in graphene, as well as of its potential spintronics applications. To investigate this question, we measure, by exploiting the well-established weak localization physics, the phase coherence length L Φ in dilute fluorinated graphene. L Φ reveals an unusual saturation below ∼10K, which cannot be explained by nonmagnetic origins. The corresponding phase-breaking rate increases with decreasing carrier density and increases with increasing fluorine density. These results provide strong evidence for spin-flip scattering and point to the existence of an adatom-induced local magnetic moment in fluorinated graphene. Our results will stimulate further investigations of magnetism and spintronics applications in adatom-engineered graphene.

AB - The issue of whether local magnetic moments can be formed by introducing adatoms into graphene is of intense research interest because it opens the window to fundamental studies of magnetism in graphene, as well as of its potential spintronics applications. To investigate this question, we measure, by exploiting the well-established weak localization physics, the phase coherence length L Φ in dilute fluorinated graphene. L Φ reveals an unusual saturation below ∼10K, which cannot be explained by nonmagnetic origins. The corresponding phase-breaking rate increases with decreasing carrier density and increases with increasing fluorine density. These results provide strong evidence for spin-flip scattering and point to the existence of an adatom-induced local magnetic moment in fluorinated graphene. Our results will stimulate further investigations of magnetism and spintronics applications in adatom-engineered graphene.

UR - http://www.scopus.com/inward/record.url?scp=84861814899&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861814899&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.108.226602

DO - 10.1103/PhysRevLett.108.226602

M3 - Article

C2 - 23003635

AN - SCOPUS:84861814899

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

M1 - 226602

ER -