Linked Life Data

17501446

Source:http://linkedlifedata.com/resource/pubmed/id/17501446

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
16
pubmed:dateCreated
2007-5-15
pubmed:abstractText
Gate-modulated low-temperature Raman spectra reveal that the electric field effect (EFE), pervasive in contemporary electronics, has marked impacts on long-wavelength optical phonons of graphene. The EFE in this two-dimensional honeycomb lattice of carbon atoms creates large density modulations of carriers with linear dispersion (known as Dirac fermions). Our EFE Raman spectra display the interactions of lattice vibrations with these unusual carriers. The changes of phonon frequency and linewidth demonstrate optically the particle-hole symmetry about the charge-neutral Dirac point. The linear dependence of the phonon frequency on the EFE-modulated Fermi energy is explained as the electron-phonon coupling of massless Dirac fermions.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Apr
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
98
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
166802
pubmed:year
2007
pubmed:articleTitle
Electric field effect tuning of electron-phonon coupling in graphene.
pubmed:affiliation
Department of Physics, Columbia University, New York, New York 10027, USA.
pubmed:publicationType
Journal Article