Formation of a quasi-free-standing graphene with a band gap at the dirac point by Pb atoms intercalation under graphene on Re(0001)

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Formation of a quasi-free-standing graphene with a band gap at the dirac point by Pb atoms intercalation under graphene on Re(0001). / Estyunin, D. A.; Klimovskikh, I. I.; Voroshnin, V. Yu; Sostina, D. M.; Petaccia, L.; Di Santo, G.; Shikin, A. M.

In: Journal of Experimental and Theoretical Physics, Vol. 125, No. 5, 01.11.2017, p. 762-767.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{f501b8a6bd30464f880c8dd2b1c8c7ac,

title = "Formation of a quasi-free-standing graphene with a band gap at the dirac point by Pb atoms intercalation under graphene on Re(0001)",

abstract = "The control of the graphene electronic structure is one of the most important problems in modern condensed matter physics. The graphene monolayer synthesized on the Re(0001) surface and then subjected to the intercalation of Pb atoms is studied by angle-resolved photoelectron spectroscopy and low-energy electron diffraction. The intercalation of Pb atoms under graphene takes place when the substrate is annealed above 500°C. As a result of the intercalation of Pb atoms, graphene becomes quasi-free-standing and a local band gap appears at the Dirac point. The band gap changes with the substrate temperature during the formation of the graphene/Pb/Re(0001) system. The band gap is 0.3 eV at an annealing temperature of 620°C and it increases up to 0.4 eV upon annealing at 830°C. Based on our data, we conclude that the band gap is mainly caused by the hybridization of the graphene π state with the rhenium 5d states located near the Dirac point of the graphene π state.",

author = "Estyunin, {D. A.} and Klimovskikh, {I. I.} and Voroshnin, {V. Yu} and Sostina, {D. M.} and L. Petaccia and {Di Santo}, G. and Shikin, {A. M.}",

note = "Funding Information: This work was supported by Saint Petersburg University (project no. 15.61.202.2015) and the Russian Science Foundation (project no. 17-12-01047). Publisher Copyright: {\textcopyright} 2017, Pleiades Publishing, Inc. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2017",

month = nov,

day = "1",

doi = "10.1134/S1063776117100065",

language = "English",

volume = "125",

pages = "762--767",

journal = "Journal of Experimental and Theoretical Physics",

issn = "1063-7761",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "5",

}

RIS

TY - JOUR

T1 - Formation of a quasi-free-standing graphene with a band gap at the dirac point by Pb atoms intercalation under graphene on Re(0001)

AU - Estyunin, D. A.

AU - Klimovskikh, I. I.

AU - Voroshnin, V. Yu

AU - Sostina, D. M.

AU - Petaccia, L.

AU - Di Santo, G.

AU - Shikin, A. M.

N1 - Funding Information: This work was supported by Saint Petersburg University (project no. 15.61.202.2015) and the Russian Science Foundation (project no. 17-12-01047). Publisher Copyright: © 2017, Pleiades Publishing, Inc. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - The control of the graphene electronic structure is one of the most important problems in modern condensed matter physics. The graphene monolayer synthesized on the Re(0001) surface and then subjected to the intercalation of Pb atoms is studied by angle-resolved photoelectron spectroscopy and low-energy electron diffraction. The intercalation of Pb atoms under graphene takes place when the substrate is annealed above 500°C. As a result of the intercalation of Pb atoms, graphene becomes quasi-free-standing and a local band gap appears at the Dirac point. The band gap changes with the substrate temperature during the formation of the graphene/Pb/Re(0001) system. The band gap is 0.3 eV at an annealing temperature of 620°C and it increases up to 0.4 eV upon annealing at 830°C. Based on our data, we conclude that the band gap is mainly caused by the hybridization of the graphene π state with the rhenium 5d states located near the Dirac point of the graphene π state.

AB - The control of the graphene electronic structure is one of the most important problems in modern condensed matter physics. The graphene monolayer synthesized on the Re(0001) surface and then subjected to the intercalation of Pb atoms is studied by angle-resolved photoelectron spectroscopy and low-energy electron diffraction. The intercalation of Pb atoms under graphene takes place when the substrate is annealed above 500°C. As a result of the intercalation of Pb atoms, graphene becomes quasi-free-standing and a local band gap appears at the Dirac point. The band gap changes with the substrate temperature during the formation of the graphene/Pb/Re(0001) system. The band gap is 0.3 eV at an annealing temperature of 620°C and it increases up to 0.4 eV upon annealing at 830°C. Based on our data, we conclude that the band gap is mainly caused by the hybridization of the graphene π state with the rhenium 5d states located near the Dirac point of the graphene π state.

UR - http://www.scopus.com/inward/record.url?scp=85038433469&partnerID=8YFLogxK

U2 - 10.1134/S1063776117100065

DO - 10.1134/S1063776117100065

M3 - Article

AN - SCOPUS:85038433469

VL - 125

SP - 762

EP - 767

JO - Journal of Experimental and Theoretical Physics

JF - Journal of Experimental and Theoretical Physics

SN - 1063-7761

IS - 5

ER -

ID: 70829808