scholarly journals Critical role of interface states for spin-dependent tunneling in half-metallic Co2MnSi-based magnetic tunnel junctions investigated by tunneling spectroscopy

2009 ◽  
Vol 94 (9) ◽  
pp. 092503 ◽  
Author(s):  
Takayuki Ishikawa ◽  
Naoki Itabashi ◽  
Tomoyuki Taira ◽  
Ken-ichi Matsuda ◽  
Tetsuya Uemura ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Critical Role ◽  
Magnetic Tunnel Junctions ◽  
Tunneling Spectroscopy ◽  
Interface States ◽  
Half Metallic

Inelastic tunneling spectroscopy of magnetic tunnel junctions based on CoFeB∕MgO∕CoFeB with Mg insertion layer

2006 ◽  
Vol 99 (8) ◽  
pp. 08T305 ◽  
Author(s):  
Guo-Xing Miao ◽  
Krishna B. Chetry ◽  
Arunava Gupta ◽  
William H. Butler ◽  
Koji Tsunekawa ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Tunneling Spectroscopy ◽  
Inelastic Tunneling

Role of Metal-Oxide Interface in Determining the Spin Polarization of Magnetic Tunnel Junctions

Science ◽  
1999 ◽  
Vol 286 (5439) ◽  
pp. 507-509 ◽  
Author(s):  
Jose Maria De Teresa ◽  
Agnès Barthélémy ◽  
Albert Fert ◽  
Jean Pierre Contour ◽  
François Montaigne ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metal Oxide ◽  
Spin Polarization ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Ferromagnetic Transition ◽  
Oxide Interface ◽  
Oxide Interfaces ◽  
Structure Of Metal

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.

Role of interfacial roughness on bias-dependent magnetoresistance and transport properties in magnetic tunnel junctions

2005 ◽  
Vol 98 (10) ◽  
pp. 103504 ◽  
Author(s):  
J. C. A. Huang ◽  
C. Y. Hsu ◽  
Y. F. Liao ◽  
M. Z. Lin ◽  
C. H. Lee
Keyword(s):  
Transport Properties ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Interfacial Roughness

Half-metallic band structure observed in Co2MnSi-based magnetic tunnel junctions

2007 ◽  
Vol 40 (5) ◽  
pp. 1221-1227 ◽  
Author(s):  
Y Sakuraba ◽  
M Hattori ◽  
M Oogane ◽  
H Kubota ◽  
Y Ando ◽  
...  
Keyword(s):  
Band Structure ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Half Metallic
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