Orbital symmetry fingerprints for magnetic adatoms in graphene

In this paper, we describe the formation of local resonances in graphene in the presence of magnetic adatoms containing localized orbitals of arbitrary symmetry, corresponding to any given angular momentum state. We show that quantum interference effects which are naturally inbuilt in the honeycomb...

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Bibliographic Details
Published inNew journal of physics Vol. 16; no. 1; pp. 13045 - 26
Main Authors Uchoa, Bruno, Yang, Ling, Tsai, S-W, Peres, N M R, Neto, A H Castro
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2014
Subjects
Adatoms
Angular momentum
Fingerprints
Formations
Graphene
Honeycomb
Jahn-Teller effect
Orbitals
Physics
Quantum interference effects
Resistance
Signatures
Symmetry
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Summary:In this paper, we describe the formation of local resonances in graphene in the presence of magnetic adatoms containing localized orbitals of arbitrary symmetry, corresponding to any given angular momentum state. We show that quantum interference effects which are naturally inbuilt in the honeycomb lattice in combination with the specific orbital symmetry of the localized state lead to the formation of fingerprints in differential conductance curves. In the presence of Jahn-Teller distortion effects, which lift the orbital degeneracy of the adatoms, the orbital symmetries can lead to distinctive signatures in the local density of states. We show that those effects allow scanning tunneling probes to characterize adatoms and defects in graphene.
Bibliography:Deutsche Physikalische Gesellschaft
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/16/1/013045