| Автор | H J W Zandvliet |
| Автор | D Terpstra |
| Автор | A van Silfhout |
| Дата выпуска | 1991-01-28 |
| dc.description | The authors have calculated the energy differences between the four members of the 2*1 family (b(2*1), c(4*2), p(2*2) and p(4*1)) of the Ge (001) surface by taking only electrostatic interactions between the dimers into account. They have found that p(2*2) is the lowest-energy reconstruction at zero temperature. The phase transitions from ordered p(2*2) to disordered (2*1) and ordered c(4*2) to disordered (2*1) are discussed using the authors' energy calculations, the mean-field approximation, the Ising model and Onsagers' exact solution. A second-order phase transition is found at about 200-250 K from an ordered p(2*2) (c(4*2)) dimer reconstruction to a disordered (2*1) dimer reconstruction assuming a charge transfer of 0.08e between the up atom and the down atom of the asymmetric dimer. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Reconstructions and phase transitions of the Ge(001) surface |
| Тип | paper |
| DOI | 10.1088/0953-8984/3/4/003 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 3 |
| Первая страница | 409 |
| Последняя страница | 415 |
| Аффилиация | H J W Zandvliet; Fac. of Appl. Phys., Twente Univ., Enschede, Netherlands |
| Аффилиация | D Terpstra; Fac. of Appl. Phys., Twente Univ., Enschede, Netherlands |
| Аффилиация | A van Silfhout; Fac. of Appl. Phys., Twente Univ., Enschede, Netherlands |
| Выпуск | 4 |
