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http://hdl.handle.net/1843/58324| Type: | Artigo de Periódico |
| Title: | Hydrogen-induced metallization on the ZnO(0001) surface |
| Authors: | Wendell Simões e Silva Christian Stiehler Edmar Avellar Soares Eduardo Matzenbacher Bittar Fernando Loureiro Stavale Junior Júlio Criginski Cezar Helmut Kuhlenbeck Hans-Joachim Freund Eduardo Enrique Cisternas Jara |
| Abstract: | The formation of hydrogen overlayers on the Zn-terminated ZnO(0001) surface has been reexamined by angle-resolved photoemission spectroscopy (ARPES). While low-energy electron diffraction patterns display the same (1 × 1) symmetry for different surface preparations, the electronic structure feature close to the Fermi level shows the formation of electron pockets, compatible with hydrogen-induced metallic states. Using ARPES and density functional theory (DFT) calculations, we show that hydrogen adspecies can also lead to metallization of this zinc-oxide surface in a similar manner as observed previously on ZnO(10¯10) and O-terminated ZnO(000¯1). Importantly, our DFT calculations indicate that these electron pockets are formed by sp hybridized states and therefore the angular distribution of the emitted photoelectron is significantly suppressed at the normal emission. |
| Subject: | Hidrogênio Óxidos |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1103/PhysRevB.98.155416 |
| URI: | http://hdl.handle.net/1843/58324 |
| Issue Date: | 2018 |
| metadata.dc.url.externa: | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.98.155416 |
| metadata.dc.relation.ispartof: | Physical Review B |
| Appears in Collections: | Artigo de Periódico |
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