Potential Energy Landscape for Hot Electrons in Periodically Nanostructured Graphene

被引：82

作者：

Borca, B. ^{[1
]}

Barja, S. ^{[1
,2
]}

Garnica, M. ^{[1
,2
]}

Sanchez-Portal, D. ^{[3
,4
]}

Silkin, V. M. ^{[3
,4
,5
]}

Chulkov, E. V. ^{[3
,4
,6
]}

Hermanns, C. F. ^{[1
]}

Hinarejos, J. J. ^{[1
,7
]}

Vazquez de Parga, A. L. ^{[1
,7
]}

Arnau, A. ^{[3
,4
,6
]}

Echenique, P. M. ^{[3
,4
,6
]}

Miranda, R. ^{[1
,2
,7
]}

机构：

[1] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain

[2] IMDEA Nanociencia, Madrid 28049, Spain

[3] MPC, Ctr Fis Mat CSIC UPV EHU, San Sebastian 20018, Spain

[4] DIPC, San Sebastian 20018, Spain

[5] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain

[6] Fac Quim, Dept Fis Mat UPV EHU, San Sebastian 20080, Spain

[7] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 03期

关键词：

GRAPHITE; STATES; SURFACES; RU(0001); IMAGE;

D O I：

10.1103/PhysRevLett.105.036804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We explore the spatial variations of the unoccupied electronic states of graphene epitaxially grown on Ru(0001) and observed three unexpected features: the first graphene image state is split in energy; unlike all other image states, the split state does not follow the local work function modulation, and a new interfacial state at +3 eV appears on some areas of the surface. First-principles calculations explain the observations and permit us to conclude that the system behaves as a self-organized periodic array of quantum dots.

引用

页数：4

共 27 条

[1] TUNNELING SPECTROSCOPY AND INVERSE PHOTOEMISSION - IMAGE AND FIELD STATES [J].

BINNIG, G ;

FRANK, KH ;

FUCHS, H ;

GARCIA, N ;

REIHL, B ;

ROHRER, H ;

SALVAN, F ;

WILLIAMS, AR .

PHYSICAL REVIEW LETTERS, 1985, 55 (09) :991-994

[2] Comparison of electronic structure and template function of single-layer graphene and a hexagonal boron nitride nanomesh on Ru(0001) [J].

Brugger, Thomas ;

Guenther, Sebastian ;

Wang, Bin ;

Dil, J. Hugo ;

Bocquet, Marie-Laure ;

Osterwalder, Juerg ;

Wintterlin, Joost ;

Greber, Thomas .

PHYSICAL REVIEW B, 2009, 79 (04)

[3] The role of the interlayer state in the electronic structure of superconducting graphite intercalated compounds [J].

Csányi, G ;

Littlewood, PB ;

Nevidomskyy, AH ;

Pickard, CJ ;

Simons, BD .

NATURE PHYSICS, 2005, 1 (01) :42-45

[4] INTERCALATION COMPOUNDS OF GRAPHITE [J].

DRESSELHAUS, MS ;

DRESSELHAUS, G .

ADVANCES IN PHYSICS, 1981, 30 (02) :139-326

[5] EXISTENCE AND DETECTION OF RYDBERG STATES AT SURFACES [J].

ECHENIQUE, PM ;

PENDRY, JB .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (10) :2065-2075

[6] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[7] ADSORBATE BAND DISPERSIONS FOR C ON RU(0001) [J].

HIMPSEL, FJ ;

CHRISTMANN, K ;

HEIMANN, P ;

EASTMAN, DE ;

FEIBELMAN, PJ .

SURFACE SCIENCE, 1982, 115 (03) :L159-L164

[8] FIELD-INDUCED RESONANCE STATES AT A SURFACE [J].

JASON, AJ .

PHYSICAL REVIEW, 1967, 156 (02) :266-&

[9] First principles study of the graphene/Ru(0001) interface [J].

Jiang, De-en ;

Du, Mao-Hua ;

Dai, Sheng .

JOURNAL OF CHEMICAL PHYSICS, 2009, 130 (07)

[10] IDENTIFICATION OF METALS IN SCANNING-TUNNELING-MICROSCOPY VIA IMAGE STATES [J].

JUNG, T ;

MO, YW ;

HIMPSEL, FJ .

PHYSICAL REVIEW LETTERS, 1995, 74 (09) :1641-1644

← 1 2 3 →