Evidence for Flat Bands near the Fermi Level in Epitaxial Rhombohedral Multilayer Graphene

被引：82

作者：

Pierucci, Debora ^{[1
]}

Sediri, Haikel ^{[1
]}

Hajlaoui, Mahdi ^{[1
,2
]}

Girard, Jean-Christophe ^{[1
]}

Brumme, Thomas ^{[3
]}

Calandra, Matteo ^{[3
]}

Velez-Fort, Emilio ^{[1
,3
]}

Patriarche, Gilles ^{[1
]}

Silly, Mathieu G. ^{[2
]}

Ferro, Gabriel ^{[4
]}

Souliere, Veronique ^{[4
]}

Marangolo, Massimiliano ^{[5
,6
]}

Sirotti, Fausto ^{[2
]}

Mauri, Francesco ^{[3
]}

Ouerghi, Abdelkarim ^{[1
]}

机构：

[1] CNRS, LPN, F-91460 Marcoussis, France

[2] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France

[3] Univ Paris 06, Sorbonne Univ, CNRS,IRD, Inst Mineral Phys Mat & Cosmochim,UMR 7590,MNHN, F-75005 Paris, France

[4] Univ Lyon 1, UMR 5615, Lab Multimat & Interfaces, F-69100 Villeurbanne, France

[5] Univ Paris 06, Univ Paris 04, INSP, UMR 7588, F-75005 Paris, France

[6] CNRS, UMR 7588, Inst Nanosci Paris, F-75005 Paris, France

来源：

ACS NANO | 2015年 / 9卷 / 05期

关键词：

rhombohedral multilayer graphene; flat band; density functional theory; angle-resolved photoemission spectroscopy; STM/STS; STEM; TRILAYER GRAPHENE; GRAPHITE; LAYERS;

D O I：

10.1021/acsnano.5b01239

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The stacking order of multilayer graphene has a profound influence on its electronic properties. In particular, it has been predicted that a rhombohedral stacking sequence displays a very flat conducting surface state: the longer the sequence, the flatter the band. In such a flat band, the role of electron electron correlation is enhanced, possibly resulting in high T-c superconductivity, magnetic order, or charge density wave order. Here we demonstrate that rhombohedral multilayers are easily obtained by epitaxial growth on 3C-S1C(111) on a 2 degrees off-axis 6H-SiC(0001). The resulting samples contain rhombohedral sequences of five layers on 70% of the surface. We confirm the presence of the flat band at the Fermi level by scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy, in close agreement with the predictions of density functional theory calculations.

引用

页码：5432 / 5439

页数：8

共 29 条

[21] Advanced photoelectric effect experiment beamline at Elettra: A surface science laboratory coupled with Synchrotron Radiation
Panaccione, G.
Vobornik, I.
Fujii, J.
Krizmancic, D.
Annese, E.
Giovanelli, L.
Maccherozzi, F.
Salvador, F.
De Luisa, A.
Benedetti, D.
Gruden, A.
Bertoch, P.
Polack, F.
Cocco, D.
Sostero, G.
Diviacco, B.
Hochstrasser, M.
Maier, U.
Pescia, D.
Back, C. H.
Greber, T.
Osterwalder, J.
Galaktionov, M.
Sancrotti, M.
Rossi, G.
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2009, 80 (04)
[22] Velocity renormalization and carrier lifetime in graphene from the electron-phonon interaction
Park, Cheol-Hwan
Giustino, Feliciano
Cohen, Marvin L.
Louie, Steven G.
[J]. PHYSICAL REVIEW LETTERS, 2007, 99 (08)
[23] TEMPO: a New Insertion Device Beam line at SOLEIL for Time Resolved Photoelectron Spectroscopy Experiments on Solids and Interfaces
Polack, F.
Silly, M.
Chauvet, C.
Lagarde, B.
Bergeard, N.
Izquierdo, M.
Chubar, O.
Krizmancic, D.
Ribbens, M.
Duval, J-P.
Basset, C.
Kubsky, S.
Sirotti, F.
[J]. SRI 2009: THE 10TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION, 2010, 1234 : 185 - 188
[24] Epitaxial graphene formation on 3C-SiC/Si thin films
Suemitsu, Maki
Jiao, Sai
Fukidome, Hirokazu
Tateno, Yasunori
Makabe, Isao
Nakabayashi, Takashi
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2014, 47 (09)
[25] Edge state in epitaxial nanographene on 3C-SiC(100)/Si(100) substrate
Velez-Fort, E.
Silly, M. G.
Belkhou, R.
Shukla, A.
Sirotti, F.
Ouerghi, A.
[J]. APPLIED PHYSICS LETTERS, 2013, 103 (08)
[26] Atomic Structure of ABC Rhombohedral Stacked Trilayer Graphene
Warner, Jamie H.
Mukai, Masaki
Kirkland, Angus I.
[J]. ACS NANO, 2012, 6 (06) : 5680 - 5686
[27] A pathway between Bernal and rhombohedral stacked graphene layers with scanning tunneling microscopy
Xu, P.
Yang, Yurong
Qi, D.
Barber, S. D.
Ackerman, M. L.
Schoelz, J. K.
Bothwell, T. B.
Barraza-Lopez, Salvador
Bellaiche, L.
Thibado, P. M.
[J]. APPLIED PHYSICS LETTERS, 2012, 100 (20)
[28] Yankowitz M, 2014, NAT MATER, V13, P786, DOI [10.1038/NMAT3965, 10.1038/nmat3965]
[29] First direct observation of Dirac fermions in graphite
Zhou, S. Y.
Gweon, G. -H.
Graf, J.
Fedorov, A. V.
Spataru, C. D.
Diehl, R. D.
Kopelevich, Y.
Lee, D. -H.
Louie, Steven G.
Lanzara, A.
[J]. NATURE PHYSICS, 2006, 2 (09) : 595 - 599

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