Understanding the structure of metal encapsulated Si cages and nanotubes: Role of symmetry and d-band filling

2003 ◽  
Vol 119 (14) ◽  
pp. 7498-7502 ◽  
Author(s):  
Giannis Mpourmpakis ◽  
George E. Froudakis ◽  
Antonis N. Andriotis ◽  
Madhu Menon
Science ◽  
1999 ◽  
Vol 286 (5439) ◽  
pp. 507-509 ◽  
Author(s):  
Jose Maria De Teresa ◽  
Agnès Barthélémy ◽  
Albert Fert ◽  
Jean Pierre Contour ◽  
François Montaigne ◽  
...  

The role of the metal-oxide interface in determining the spin polarization of electrons tunneling from or into ferromagnetic transition metals in magnetic tunnel junctions is reported. The spin polarization of cobalt in tunnel junctions with an alumina barrier is positive, but it is negative when the barrier is strontium titanate or cerium lanthanite. The results are ascribed to bonding effects at the transition metal–barrier interface. The influence of the electronic structure of metal-oxide interfaces on the spin polarization raises interesting fundamental problems and opens new ways to optimize the magnetoresistance of tunnel junctions.


2007 ◽  
Vol 76 (7) ◽  
Author(s):  
A. Kamińska ◽  
G. Franssen ◽  
T. Suski ◽  
I. Gorczyca ◽  
N. E. Christensen ◽  
...  

Author(s):  
G. N. Gerasimov ◽  
V. F. Gromov ◽  
M. I. Ikim ◽  
L. I. Trachtenberg

Abstract The relationship between the structure and properties of nanoscale conductometric sensors based on binary mixtures of metal oxides in the detection of reducing gases in the environment is considered. The sensory effect in such systems is determined by the chemisorption of oxygen molecules and the detected gas on the surface of metal oxide catalytically active particles, the transfer of the reaction products to electron-rich nanoparticles, and subsequent reactions. Particular attention is paid to the doping of nanoparticles of the sensitive layer. In particular, the effect of doping on the concentration of oxygen vacancies, the activity of oxygen centers, and the adsorption properties of nanoparticles is discussed. In addition, the role of heterogeneous contacts is analyzed.


Author(s):  
Alexei B. Burdukov ◽  
N. V. Pervukhina ◽  
G. V. Romanenko ◽  
V. I. Ovcharenko

2019 ◽  
Vol 100 (2) ◽  
Author(s):  
S. J. Xu ◽  
J. Y. Shi ◽  
Y. S. Hou ◽  
Z. Zheng ◽  
H. B. Zhao ◽  
...  

ChemInform ◽  
2010 ◽  
Vol 33 (16) ◽  
pp. no-no
Author(s):  
Alexei B. Burdukov ◽  
N. V. Pervukhina ◽  
G. V. Romanenko ◽  
V. I. Ovcharenko

2017 ◽  
Vol 19 (47) ◽  
pp. 31940-31948 ◽  
Author(s):  
Vikas Chauhan ◽  
Arthur C. Reber ◽  
Shiv N. Khanna

The role of carbon monoxide ligands on the magnetic moment of Co6Se8(CO)n clusters, n = 0–6 was investigated to better understand the interplay between the electronic structure of metal chalcogenide clusters and their ligands.


2017 ◽  
Vol 96 (8) ◽  
Author(s):  
M. R. Wartenbe ◽  
K.-W. Chen ◽  
A. Gallagher ◽  
N. Harrison ◽  
R. D. McDonald ◽  
...  
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