Graphene Tunable Transparency to Tunneling Electrons: A Direct Tool To Measure the Local Coupling
Source abstract
Abstract
The local interaction between graphene and a host substrate strongly determines the actual properties of the graphene layer. Here we show that scanning tunneling microscopy (STM) can selectively help to visualize either the graphene layer or the substrate underneath, or even both at the same time, providing a comprehensive picture of this coupling with atomic precision and high energy resolution. We demonstrate this for graphene on Cu(111). Our spectroscopic data show that, in the vicinity of the Fermi level, graphene π bands are well preserved presenting a small n-doping induced by Cu(111) surface state electrons. Such results are corroborated by Angle-Resolved Photoemission Spectra (ARPES) and Density Functional Theory with van der Waals (DFT + vdW) calculations. Graphene tunable transparency also allows the investigation of the interaction between the substrate and foreign species (such as atomic H or C vacancies) on the graphene layer. Our calculations explain graphene tunable transparency in terms of the rather different decay lengths of the graphene Dirac π states and the metal surface state, suggesting that it should apply to a good number of graphene/substrate systems.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Graphene research and applications · Quantum and electron transport phenomena · Molecular Junctions and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Centro de Física de Materiales (CSIC-UPV-EHU) and Materials Physics Center (MPC), Manuel Lardizábal 5, E-20018 San Sebastián, Spain
II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
CIC nanoGUNE, 20018 Donostia-San Sebastian, Spain
Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
Donostia International Physics Center DIPC, E-20018 San Sebastián, Spain
Departamento de Física Aplicada I, Universidad del País Vasco, E-20018 San Sebastián, Spain
Funding
European Commission · Ministerio de Economía y Competitividad · Ikerbasque, Basque Foundation for Science · Directorate-General for Research and Innovation · Comunidad de Madrid
References (73)
Show source-provided references
1. 10.1126/science.113068110.1126/science.1130681 ↗
2. 10.1103/PhysRevLett.98.20680210.1103/PhysRevLett.98.206802 ↗
3. 10.1038/nmat200310.1038/nmat2003 ↗
4. 10.1038/nnano.2009.8910.1038/nnano.2009.89 ↗
5. 10.1103/PhysRevLett.101.02680310.1103/PhysRevLett.101.026803 ↗
6. 10.1103/PhysRevB.87.04140310.1103/PhysRevB.87.041403 ↗
7. 10.1016/j.susc.2008.08.03710.1016/j.susc.2008.08.037 ↗
8. 10.1103/PhysRevLett.102.05680810.1103/PhysRevLett.102.056808 ↗
9. 10.1038/srep0059010.1038/srep00590 ↗
10. 10.1038/nature0555510.1038/nature05555 ↗
11. 10.1038/nmat271010.1038/nmat2710 ↗
12. 10.1126/science.120875910.1126/science.1208759 ↗
13. 10.1038/ncomms301010.1038/ncomms3010 ↗
14. 10.1103/PhysRevLett.104.09680410.1103/PhysRevLett.104.096804 ↗
15. 10.1103/PhysRevLett.103.24680410.1103/PhysRevLett.103.246804 ↗
16. 10.1103/PhysRevB.81.23540810.1103/PhysRevB.81.235408 ↗
17. 10.1103/PhysRevLett.101.15760110.1103/PhysRevLett.101.157601 ↗
18. 10.1038/nphys317310.1038/nphys3173 ↗
19. 10.1103/PhysRevB.77.19340110.1103/PhysRevB.77.193401 ↗
20. 10.1103/PhysRevB.84.19544310.1103/PhysRevB.84.195443 ↗
21. 10.1126/science.114288210.1126/science.1142882 ↗
22. 10.1038/nphys146310.1038/nphys1463 ↗
23. 10.1038/nphys136510.1038/nphys1365 ↗
24. 10.1038/nature0281710.1038/nature02817 ↗
25. 10.1038/nature0554510.1038/nature05545 ↗
26. 10.1021/nl903161710.1021/nl9031617 ↗
27. 10.1126/science.112592510.1126/science.1125925 ↗
28. 10.1103/PhysRevB.76.23541610.1103/PhysRevB.76.235416 ↗
29. 10.1063/1.277108410.1063/1.2771084 ↗
30. 10.1021/nn102916c10.1021/nn102916c ↗
31. 10.1021/nl201281m10.1021/nl201281m ↗
32. 10.1103/PhysRevLett.108.20680510.1103/PhysRevLett.108.206805 ↗
33. 10.1557/mrs.2012.23710.1557/mrs.2012.237 ↗
34. 10.1126/science.117124510.1126/science.1171245 ↗
35. 10.1038/nnano.2010.13210.1038/nnano.2010.132 ↗
36. 10.1103/PhysRevLett.107.11680310.1103/PhysRevLett.107.116803 ↗
37. 10.1103/PhysRevLett.105.24680310.1103/PhysRevLett.105.246803 ↗
38. 10.1103/PhysRevB.75.12540810.1103/PhysRevB.75.125408 ↗
39. 10.1103/PhysRevB.77.03542710.1103/PhysRevB.77.035427 ↗
40. 10.1126/science.116713010.1126/science.1167130 ↗
41. 10.1021/nl101670610.1021/nl1016706 ↗
42. 10.1103/PhysRevB.84.15542510.1103/PhysRevB.84.155425 ↗
43. 10.1103/PhysRevLett.101.20680210.1103/PhysRevLett.101.206802 ↗
44. 10.1103/PhysRevB.86.04544410.1103/PhysRevB.86.045444 ↗
45. 10.1103/PhysRevB.62.R1634110.1103/PhysRevB.62.R16341 ↗
46. 10.1103/PhysRevLett.92.03680310.1103/PhysRevLett.92.036803 ↗
47. 10.1002/wcms.3010.1002/wcms.30 ↗
48. 10.1063/1.475413010.1063/1.4754130 ↗
49. 10.1016/j.surfrep.2011.12.00110.1016/j.surfrep.2011.12.001 ↗
50. 10.1103/PhysRevB.88.12543310.1103/PhysRevB.88.125433 ↗
51. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
52. 10.1002/jcc.2049510.1002/jcc.20495 ↗
53. 10.1063/1.338234410.1063/1.3382344 ↗
54. 10.1103/PhysRevB.83.19513110.1103/PhysRevB.83.195131 ↗
55. 10.1103/PhysRevB.54.1116910.1103/PhysRevB.54.11169 ↗
56. 10.1103/PhysRevB.59.175810.1103/PhysRevB.59.1758 ↗
57. 10.1103/PhysRevB.79.19542510.1103/PhysRevB.79.195425 ↗
58. Chen C. J. · 2008
59. 10.1016/j.progsurf.2006.07.00410.1016/j.progsurf.2006.07.004 ↗
60. 10.1021/nn404535810.1021/nn4045358 ↗
61. 10.1103/PhysRevB.91.19542510.1103/PhysRevB.91.195425 ↗
62. 10.1103/PhysRevLett.106.17610110.1103/PhysRevLett.106.176101 ↗
63. 10.1016/0039-6028(95)00509-910.1016/0039-6028(95)00509-9 ↗
64. 10.1103/PhysRevB.63.11541510.1103/PhysRevB.63.115415 ↗
65. 10.1103/PhysRevLett.109.18660410.1103/PhysRevLett.109.186604 ↗
66. 10.1038/344524a010.1038/344524a0 ↗
67. 10.1126/science.268.5217.159010.1126/science.268.5217.1590 ↗
68. 10.1103/PhysRevB.90.24542010.1103/PhysRevB.90.245420 ↗
69. 10.1103/PhysRevB.91.11541910.1103/PhysRevB.91.115419 ↗
70. 10.1021/nn500396c10.1021/nn500396c ↗
71. 10.1021/nl503646310.1021/nl5036463 ↗
72. 10.1063/1.243241010.1063/1.2432410 ↗
73. 10.1103/PhysRevB.67.15510810.1103/PhysRevB.67.155108 ↗