Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Roger Uhrberg"'
Publikováno v:
The Journal of Physical Chemistry Letters
Inspired by the unique properties of graphene, research efforts have broadened to investigations of various other two-dimensional materials with the aim of exploring their properties for future applications. Our combined experimental and theoretical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed558903a3577fc1a839e8edff8cca0e
https://doi.org/10.1021/acs.jpclett.0c00123
https://doi.org/10.1021/acs.jpclett.0c00123
Publikováno v:
Physical Review B. 104
Atomic and electronic structure investigations of the substitutional ${\mathrm{Au}}_{2}\mathrm{Sn}$ surface alloy formed on Au(111) are presented. Low energy electron diffraction and scanning tunneling microscopy (STM) reveal a structure with a local
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f96373c63618fca95559d700193eaf2
https://doi.org/10.1103/physrevb.104.125408
https://doi.org/10.1103/physrevb.104.125408
Autor:
Weimin Wang, Hao Li, Alexei Zakharov, Mikael Syväjärvi, Jun Lu, Yuchen Shi, Lars Hultman, Roger Uhrberg, Huan Shang, Rositsa Yakimova, Jianwu Sun, Lizhi Zhang
Publikováno v:
ACS Nano
Engineering tunable graphene-semiconductor interfaces while simultaneously preserving the superior properties of graphene is critical to graphene-based devices for electronic, optoelectronic, biomedical, and photoelectrochemical applications. Here, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ee341a4bb3f4e23a62ecd8dc4612899
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-165945
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-165945
Various elements (Ge, Sn, Pb, Sb, and Bi) form well-ordered two-dimensional surface alloys on Ag(111). One out of three Ag atoms in the surface layer is replaced in an ordered fashion to form a root 3 x root 3 periodicity. These surface alloys play a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::deed86a7c122ca4ffd120f8d1ebb9761
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-172207
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-172207
Group V element analogues of graphene have attracted a lot of attention recently due to their semiconducting band structures and several other interesting properties predicted by theoretical investigations in the literature. In this study, we present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78a59f1b08bebab2e84c7eae0969a7a9
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166867
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166867
Autor:
Roger Uhrberg, Hafiz Muhammad Sohail
Publikováno v:
Surface Science. 644:29-33
We have investigated sub-monolayer coverages of Sn on the Ag/Ge(111) surface. It was found that ≈0.45 monolayer (ML) resulted in a new, well-defined, reconstruction with a periodicity. The period ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b9d79a9c296a85b3f7820e367ad8440
https://doi.org/10.1016/j.susc.2015.08.037
https://doi.org/10.1016/j.susc.2015.08.037
Autor:
Weimin Wang, Mikael Syväjärvi, Jianwu Sun, Roger Uhrberg, Alexei Zakharov, Yuchen Shi, Rositsa Yakimova
The stacking order of multilayer graphene significantly influences its electronic properties. The rhombohedral stacking sequence is predicted to introduce a flat band, which has high density of states and the enhanced Coulomb interaction between char
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e67a01395c1b5f9af06c77c8f8f74472
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151307
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151307
Autor:
Weimin Wang, Roger Uhrberg
Publikováno v:
Physical Review Materials. 1
Low-energy electron diffraction (LEED), scanning tunneling microscopy (STM), and photoelectron spectroscopy have been used to study an ordered structure formed by Ge atoms deposited onto the Au(111) surface. Based on a careful analysis of STM images
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36c80a7de523ee8d81fc02fb1b3c4a01
https://doi.org/10.1103/physrevmaterials.1.074002
https://doi.org/10.1103/physrevmaterials.1.074002
Autor:
Hafiz Muhammad Sohail, Roger Uhrberg
Publikováno v:
Surface Science. 635:55-60
This study focuses on the electronic structure of a 6 x 6 surface which is formed by 0.2 monolayer of Ag on top of the Ag/Ge(111) root 3 x root 3 surface. The 6 x 6 periodicity was verified by low energy electron diffraction. Angle resolved photoelec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97b9ff1d2c7b4e6786129280041c60f4
https://doi.org/10.1016/j.susc.2014.12.008
https://doi.org/10.1016/j.susc.2014.12.008
Autor:
Roger Uhrberg, Weimin Wang
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 8, Iss 1, Pp 1946-1951 (2017)
Beilstein Journal of Nanotechnology
Beilstein Journal of Nanotechnology
We report a study of structural and electronic properties of a germanium layer on Al(111) using scanning tunneling microscopy (STM), low energy electron diffraction and core-level photoelectron spectroscopy. Experimental results show that a germanium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df6e834bc7aa066b732b8c17ab04df50
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-142181
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-142181