Nature of the low-temperature 3 x 3 surface phase of Pb/Ge(111)
| dc.contributor.author | Mascaraque Susunaga, Arantzazu | |
| dc.contributor.author | Avila, A. | |
| dc.contributor.author | Asensio, M. C. | |
| dc.contributor.author | Ferrer, S. | |
| dc.contributor.author | Michel, E. G | |
| dc.contributor.author | Álvarez Sánchez, Julio | |
| dc.date.accessioned | 2023-06-20T19:13:47Z | |
| dc.date.available | 2023-06-20T19:13:47Z | |
| dc.date.issued | 1999-03-22 | |
| dc.description | © 1999 The American Physical Society. This work was financed by DGES (Spain) (Grants No. PB-97-0031 and No. PB-97-1199). We thank the staff of ESRF for experimental support and X. Torrelles, F. Flores, E. Tosatti, and S. Modesti for fruitful discussions. A. M. thanks Eusko Jaurlaritza for financial support. | |
| dc.description.abstract | The structure of the low-temperature 3 X 3 surface phase of Pb/Ge(111) has been determined by surface x-ray diffraction experiments. Analysis of the data reveals that the Pb layer exhibits a vertical corrugation of similar to 0.4 Angstrom, affecting also the two top Ge layers. Significant distortions are found down to the third Ge layer. This structural model supports that the 3 X 3 ground state can be best described as a cooperative distortion stabilized by a gain in electronic energy. [S0031-9007(99)08749-9]. | |
| dc.description.department | Depto. de Física de Materiales | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | DGES (Spain) | |
| dc.description.sponsorship | Eusko Jaurlaritza | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/28556 | |
| dc.identifier.doi | 10.1103/PhysRevLett.82.2524 | |
| dc.identifier.issn | 0031-9007 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1103/PhysRevLett.82.2524 | |
| dc.identifier.relatedurl | http://journals.aps.org | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/59416 | |
| dc.issue.number | 12 | |
| dc.journal.title | Physical review letters | |
| dc.language.iso | eng | |
| dc.page.final | 2527 | |
| dc.page.initial | 2524 | |
| dc.publisher | American Physical Society | |
| dc.relation.projectID | No. PB-97-0031 | |
| dc.relation.projectID | No. PB-97-1199 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 538.9 | |
| dc.subject.keyword | Charge-Density-Wave | |
| dc.subject.keyword | Diffraction | |
| dc.subject.keyword | Sn/Ge(111) | |
| dc.subject.ucm | Física de materiales | |
| dc.title | Nature of the low-temperature 3 x 3 surface phase of Pb/Ge(111) | |
| dc.type | journal article | |
| dc.volume.number | 82 | |
| dcterms.references | [1] B. N. J. Persson, Surf. Sci. Rep. 15, 1 (1992). [2] J. Carpinelli et al., Nature (London) 381, 398 (1996). [3] J. S. Pedersen et al., Surf. Sci. 189y190, 1048 (1987). [4] J. M. Carpinelli et al., Phys. Rev. Lett. 79, 2859 (1997). [5] A. Goldoni and S. Modesti, Phys. Rev. Lett. 79, 3266 (1997). [6] A. P. Baddorf et al., Phys. Rev. B 57, 4579 (1998). [7] A. Mascaraque et al., Phys. Rev. B 57, 14 758 (1998). [8] R. I. G. Uhrberg and T. Balasubramanian, Phys. Rev. Lett. 81, 2108 (1998). [9] J. Avila et al., Phys. Rev. Lett. 82, 442 (1999). [10] R. Feidenhans’l, Surf. Sci. Rep. 10, 105 (1989). [11] S. Ferrer and F. Comin, Rev. Sci. Instrum. 66, 1674 (1995). [12] The lateral displacements of 1–6 atoms have roughly p 3 symmetry. This explains the smaller intensity of 3 3 3 fractional rods at low l with respect to p 3 fractional rods. [13] A. Mascaraque et al. (to be published). [14] P. N. Keating, Phys. Rev. 145, 637 (1966). [15] The symmetry of the ideal p 3 structure is p31m. Because of these displacements, the symmetry of the 3 3 3 model is reduced to p3. [16] The three Pb-Ge clusters relaxed independently in the final refinement. The two clusters moving downwards did not reach exactly the same height, and Pb atoms exhibit a small lateral displacement. [17] The origin of the preferential strain is traced back from the charge-sensitive contours of Ref. [18]. The p 3-PbyGes111d surface state (distorted in the 3 3 3 phase) is distributed not only above Pb atoms but also at the bonds between the first and second Ge bilayers where we find the largest stretching. [18] K. Würde, P. Krüger, A. Mazur, and J. Pollmann, Surf. Rev. Lett. 5, 105 (1998). [19] F. Ancilotto, A. Selloni, and E. Tosatti, Phys. Rev. B 43, 14 726 (1991). [20] J. Avila et al. (to be published). | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | 9d984e3c-69fb-476e-af0b-5134c4d26028 | |
| relation.isAuthorOfPublication | 7a0cfc93-a3f1-45bf-b529-403f216cf8f7 | |
| relation.isAuthorOfPublication.latestForDiscovery | 9d984e3c-69fb-476e-af0b-5134c4d26028 |
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