Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps
Vicinal surfaces exhibiting arrays of atomic steps are frequently investigated due to their diverse physical-chemical properties and their use as growth templates. However, surfaces featuring steps with a large number of low-coordinated kink-atoms have been widely ignored, despite their higher poten...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2018-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aacbb7 |
| _version_ | 1797750720584220672 |
|---|---|
| author | J Enrique Ortega Guillaume Vasseur Ignacio Piquero-Zulaica Sonia Matencio Miguel Angel Valbuena Julien E Rault Frederik Schiller Martina Corso Aitor Mugarza Jorge Lobo-Checa |
| author_facet | J Enrique Ortega Guillaume Vasseur Ignacio Piquero-Zulaica Sonia Matencio Miguel Angel Valbuena Julien E Rault Frederik Schiller Martina Corso Aitor Mugarza Jorge Lobo-Checa |
| author_sort | J Enrique Ortega |
| collection | DOAJ |
| description | Vicinal surfaces exhibiting arrays of atomic steps are frequently investigated due to their diverse physical-chemical properties and their use as growth templates. However, surfaces featuring steps with a large number of low-coordinated kink-atoms have been widely ignored, despite their higher potential for chemistry and catalysis. Here, the equilibrium structure and the electronic states of vicinal Ag(111) surfaces with densely kinked steps are investigated in a systematic way using a curved crystal. With scanning tunneling microscopy we observe an exceptional structural homogeneity of this class of vicinals, reflected in the smooth probability distribution of terrace sizes at all vicinal angles. This allows us to observe, first, a subtle evolution of the terrace-size distribution as a function of the terrace-width that challenges statistical models of step lattices, and second, lattice fluctuations around resonant modes of surface states. As shown in angle resolved photoemission experiments, surface states undergo stronger scattering by fully-kinked step-edges, which triggers the full depletion of the two-dimensional band at surfaces with relatively small vicinal angles. |
| first_indexed | 2024-03-12T16:37:58Z |
| format | Article |
| id | doaj.art-e5c095dd7e6041f1873262b9fb564958 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:58Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e5c095dd7e6041f1873262b9fb5649582023-08-08T14:49:33ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120707301010.1088/1367-2630/aacbb7Structure and electronic states of vicinal Ag(111) surfaces with densely kinked stepsJ Enrique Ortega0Guillaume Vasseur1Ignacio Piquero-Zulaica2Sonia Matencio3Miguel Angel Valbuena4Julien E Rault5Frederik Schiller6https://orcid.org/0000-0003-1727-3542Martina Corso7Aitor Mugarza8https://orcid.org/0000-0002-2698-885XJorge Lobo-Checa9Departamento Física Aplicada I, Universidad del País Vasco , E-20018-San Sebastian, Spain; Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center , Manuel Lardizabal 5, E-20018-San Sebastian, Spain; Donostia International Physics Centre , Manuel Lardizabal 5, E-20018-San Sebastian, SpainDonostia International Physics Centre , Manuel Lardizabal 5, E-20018-San Sebastian, SpainCentro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center , Manuel Lardizabal 5, E-20018-San Sebastian, SpainCatalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona, SpainCatalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona, SpainSynchrotron SOLEIL , L’Orme des Merisiers Saint-Aubin, BP 48 F-91192 Gif-sur-Yvette Cedex, FranceCentro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center , Manuel Lardizabal 5, E-20018-San Sebastian, SpainCentro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center , Manuel Lardizabal 5, E-20018-San Sebastian, SpainCatalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona, Spain; ICREA, Institució Catalana de Recerca i Estudis Avançats , Lluis Companys 23, E-08010 Barcelona, SpainInstituto de Ciencia de Materiales de Aragón (ICMA) , CSIC-Universidad de Zaragoza, E-50009 Zaragoza, Spain; Departamento de Física de la Materia Condensada , Universidad de Zaragoza, E-50009 Zaragoza, SpainVicinal surfaces exhibiting arrays of atomic steps are frequently investigated due to their diverse physical-chemical properties and their use as growth templates. However, surfaces featuring steps with a large number of low-coordinated kink-atoms have been widely ignored, despite their higher potential for chemistry and catalysis. Here, the equilibrium structure and the electronic states of vicinal Ag(111) surfaces with densely kinked steps are investigated in a systematic way using a curved crystal. With scanning tunneling microscopy we observe an exceptional structural homogeneity of this class of vicinals, reflected in the smooth probability distribution of terrace sizes at all vicinal angles. This allows us to observe, first, a subtle evolution of the terrace-size distribution as a function of the terrace-width that challenges statistical models of step lattices, and second, lattice fluctuations around resonant modes of surface states. As shown in angle resolved photoemission experiments, surface states undergo stronger scattering by fully-kinked step-edges, which triggers the full depletion of the two-dimensional band at surfaces with relatively small vicinal angles.https://doi.org/10.1088/1367-2630/aacbb7vicinal surfacecurved surfacekinked stepSTMphotoemissionsurface states |
| spellingShingle | J Enrique Ortega Guillaume Vasseur Ignacio Piquero-Zulaica Sonia Matencio Miguel Angel Valbuena Julien E Rault Frederik Schiller Martina Corso Aitor Mugarza Jorge Lobo-Checa Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps New Journal of Physics vicinal surface curved surface kinked step STM photoemission surface states |
| title | Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps |
| title_full | Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps |
| title_fullStr | Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps |
| title_full_unstemmed | Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps |
| title_short | Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps |
| title_sort | structure and electronic states of vicinal ag 111 surfaces with densely kinked steps |
| topic | vicinal surface curved surface kinked step STM photoemission surface states |
| url | https://doi.org/10.1088/1367-2630/aacbb7 |
| work_keys_str_mv | AT jenriqueortega structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT guillaumevasseur structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT ignaciopiquerozulaica structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT soniamatencio structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT miguelangelvalbuena structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT julienerault structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT frederikschiller structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT martinacorso structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT aitormugarza structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps AT jorgelobocheca structureandelectronicstatesofvicinalag111surfaceswithdenselykinkedsteps |