Structural and magnetic properties of Fe/ZnSe(001) interfaces
(2002) In Physical Review B (Condensed Matter and Materials Physics) 65(14).- Abstract
- We have performed first-principles electronic structure calculations to investigate the structural and magnetic properties of Fe/ZnSe(001) interfaces. Calculations involving full geometry optimizations have been carried out for a broad range of thickness of Fe layers(0.5-10 ML) on top of a ZnSe(001) substrate. Both Zn- and Se-terminated interfaces have been explored. Total energy calculations show that Se segregates at the surface, which is in agreement with recent experiments. For both Zn and Se terminations, the interface Fe magnetic moments are higher than the bulk bcc Fe moment. We have also investigated the effect of adding Fe atoms on top of a reconstructed ZnSe surface to explore the role of the reconstruction of semiconductor... (More)
- We have performed first-principles electronic structure calculations to investigate the structural and magnetic properties of Fe/ZnSe(001) interfaces. Calculations involving full geometry optimizations have been carried out for a broad range of thickness of Fe layers(0.5-10 ML) on top of a ZnSe(001) substrate. Both Zn- and Se-terminated interfaces have been explored. Total energy calculations show that Se segregates at the surface, which is in agreement with recent experiments. For both Zn and Se terminations, the interface Fe magnetic moments are higher than the bulk bcc Fe moment. We have also investigated the effect of adding Fe atoms on top of a reconstructed ZnSe surface to explore the role of the reconstruction of semiconductor surfaces in determining properties of metal-semiconductor interfaces. Fe breaks the Se dimer bond formed for a Se-rich (2x1) reconstructed surface. Finally, we looked at the reverse growth, i.e., growth of Zn and Se atoms on a bcc Fe(001) substrate to investigate the properties of the second interface of a magnetotunnel junction. The results are in good agreement with the theoretical and experimental results, wherever available. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/340176
- author
- Sanyal, Biplab LU and Mirbt, S
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 65
- issue
- 14
- publisher
- American Physical Society
- external identifiers
-
- wos:000174980300090
- scopus:0036538044
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.65.144435
- language
- English
- LU publication?
- yes
- id
- 521858ef-d7f9-4d57-a647-092614c4baf3 (old id 340176)
- date added to LUP
- 2016-04-01 16:13:02
- date last changed
- 2022-02-27 19:42:02
@article{521858ef-d7f9-4d57-a647-092614c4baf3,
abstract = {{We have performed first-principles electronic structure calculations to investigate the structural and magnetic properties of Fe/ZnSe(001) interfaces. Calculations involving full geometry optimizations have been carried out for a broad range of thickness of Fe layers(0.5-10 ML) on top of a ZnSe(001) substrate. Both Zn- and Se-terminated interfaces have been explored. Total energy calculations show that Se segregates at the surface, which is in agreement with recent experiments. For both Zn and Se terminations, the interface Fe magnetic moments are higher than the bulk bcc Fe moment. We have also investigated the effect of adding Fe atoms on top of a reconstructed ZnSe surface to explore the role of the reconstruction of semiconductor surfaces in determining properties of metal-semiconductor interfaces. Fe breaks the Se dimer bond formed for a Se-rich (2x1) reconstructed surface. Finally, we looked at the reverse growth, i.e., growth of Zn and Se atoms on a bcc Fe(001) substrate to investigate the properties of the second interface of a magnetotunnel junction. The results are in good agreement with the theoretical and experimental results, wherever available.}},
author = {{Sanyal, Biplab and Mirbt, S}},
issn = {{1098-0121}},
language = {{eng}},
number = {{14}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Structural and magnetic properties of Fe/ZnSe(001) interfaces}},
url = {{http://dx.doi.org/10.1103/PhysRevB.65.144435}},
doi = {{10.1103/PhysRevB.65.144435}},
volume = {{65}},
year = {{2002}},
}