Zobrazeno 1 - 10
of 172
pro vyhledávání: '"George Kirczenow"'
Autor:
Akira Aiba, Firuz Demir, Satoshi Kaneko, Shintaro Fujii, Tomoaki Nishino, Kazuhito Tsukagoshi, Alireza Saffarzadeh, George Kirczenow, Manabu Kiguchi
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
Abstract The thermoelectric voltage developed across an atomic metal junction (i.e., a nanostructure in which one or a few atoms connect two metal electrodes) in response to a temperature difference between the electrodes, results from the quantum in
Externí odkaz:
https://doaj.org/article/ebbc9bf93a1145be817734a8d1dfb5ac
Autor:
Alireza Saffarzadeh, George Kirczenow
Publikováno v:
Physical Review B. 106
We present a theoretical study, based on density functional theory and tight binding modeling, of the electronic structure and spin transport properties of silicon nanoparticles with adsorbed bismuth atoms. We find the bismuth atoms to form clusters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73da89f4204901e687d9d7e7ffb11d8b
https://doi.org/10.1103/physrevb.106.085416
https://doi.org/10.1103/physrevb.106.085416
Autor:
George Kirczenow, Alireza Saffarzadeh
Publikováno v:
Physical Review B. 104
We predict that two distinct strong spin filtering mechanisms in two-terminal geometries at zero magnetic field should be exhibited by bismuthene-silicon nanostructures with cowrie shell-like geometries. One of these is resonant spin filtering where
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94fc9d61b4da61aa5d405461e96e16cb
https://doi.org/10.1103/physrevb.104.155406
https://doi.org/10.1103/physrevb.104.155406
Autor:
Alireza Saffarzadeh, George Kirczenow
The interplay between groups of water molecules and single-atom contacts, as reflected in the electrical conductances and mechanical forces of copper atomic junctions, is explored by means of first-principles theory and semi-empirical calculations. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e65fa6fafb59e51ba313a0d808a1d222
http://arxiv.org/abs/2005.07873
http://arxiv.org/abs/2005.07873
A detailed computational analysis has been performed, considering copper atomic contacts that are exposed directly to water molecules, hydroxyl groups, and monatomic as well as molecular hydrogen and oxygen species. The optimized physical bonding str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::084cf0972ecb81f7155e3c492df84a20
Autor:
Mohammadhadi Azari, George Kirczenow
Publikováno v:
Physical Review B. 100
The valley and spin polarizations associated with electronic transport in quantum dots of the large-gap topological insulator (TI) monolayer bismuthene on SiC are investigated in the linear response regime using a minimal tight-binding model that acc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7119b8e7b1df3c94c509c33c81bc3eca
https://doi.org/10.1103/physrevb.100.165417
https://doi.org/10.1103/physrevb.100.165417
Autor:
Mohammadhadi Azari, George Kirczenow
We present electronic structure and quantum transport calculations that predict conducting channels induced in graphene quantum dots by lines of adsorbed hydrogen atoms to function as highly efficient, experimentally realizable valley filters, accumu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ea8c049abddd6846c405b90e2ef784
Autor:
George Kirczenow
Publikováno v:
Physical Review B. 98
A minimal tight-binding model of the two-dimensional topological-insulator bismuthene on SiC that accurately describes its experimentally determined low-energy electronic band structure is presented. Two-terminal electron transport through quantum do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33a4fb103f1175f15416eaf069fc09c1
https://doi.org/10.1103/physrevb.98.165430
https://doi.org/10.1103/physrevb.98.165430
We explore the thermoelectric properties of gold atomic chains bridging gold electrodes by means of \textit{ab initio} and semi-empirical calculations, and heuristic reasoning. We predict the thermoelectric voltage induced by a temperature difference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ded82eec60975353918e9e1ffa12c532
http://arxiv.org/abs/1809.10218
http://arxiv.org/abs/1809.10218
Autor:
Mohammadhadi Azari, George Kirczenow
Using the B\"{u}ttiker-Landauer formulation of transport theory in the linear response regime, the valley currents and non-local resistances of bilayer graphene nanostructures with broken inversion symmetry are calculated. It is shown that broken inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21e16f082950cf3be1a6e5f696df4ff5
http://arxiv.org/abs/1711.05342
http://arxiv.org/abs/1711.05342