Negative spin polarization in (La,Sr)CoO3 probed by a magnetic tunnel junction with (La,Sr)MnO3

2007 ◽  
Vol 91 (19) ◽  
pp. 192504 ◽  
Author(s):  
Y. Ishii ◽  
H. Yamada ◽  
H. Sato ◽  
H. Akoh ◽  
M. Kawasaki ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Tunnel Junction ◽  
Magnetic Tunnel Junction

Study of Electronic Structure In Ni3Fe/Al2O3/Ni3Fe Magnetic Tunnel Junction with Various Ferromagnetic Layer Thicknesses

2005 ◽  
Vol 475-479 ◽  
pp. 3909-3914
Author(s):  
Yuan Zhou ◽  
Xiao Fang Bi ◽  
Jia Xiang Shang ◽  
Hui Bin Xu
Keyword(s):  
Electronic Structure ◽  
Layer Thickness ◽  
Spin Polarization ◽  
Tunnel Junction ◽  
Great Influence ◽  
Ferromagnetic Layer ◽  
Magnetic Tunnel Junction ◽  
Local Spin Density Approximation ◽  
Insulating Layer ◽  
Maximum Value

A series models of Ni3Fe/Al2O3/Ni3Fe magnetic tunnel junction with Al-terminated interfaces have been established for investigating the influence of ferromagnetic layer thickness on the electronic structure, employing first-principle methods based on local spin-density approximation theory. The spin polarization of the interfacial Ni3Fe monolayer shows a maximum value as the thickness of ferromagnetic layer increases. The Al monolayers at the ferromagnetic/insulating interface and the O monolayer in the interior of insulating layer are also studied in terms of the change of spin polarization with the ferromagnetic layer thickness. In addition, we have found that the structure of Ni3Fe monolayer has a great influence on the spin polarization.

Interfacial Spin Polarization and Magnetic Structure of Co/MgO/Co Magnetic Tunnel Junction: Ab Initio Calculation

2008 ◽  
Vol 8 (4) ◽  
pp. 2016-2021 ◽  
Author(s):  
Chiho Kim ◽  
Yong-Chae Chung
Keyword(s):  
Ab Initio ◽  
Spin Polarization ◽  
Tunnel Junction ◽  
Density Functional ◽  
Magnetic Moments ◽  
Magnetic Tunnel Junction ◽  
Equilibrium Structure ◽  
The Density Functional Theory ◽  
Spin Polarizability ◽  
Junction Structure

Using ab initio method based on the density functional theory, the equilibrium bcc-Co(001)/rocksalt-MgO(001)/bcc-Co(001) magnetic tunnel junction structure was investigated. Spin polarization and magnetic moment were calculated for each atomic slab in the equilibrium structure by spin dependent density of states analysis. Interfacial Co atoms showed significantly larger spin polarization of –88.3%, compared to the value of inner Co slabs, –82.3%, and bulk bcc Co, –82.1%. Interestingly, Mg and O atoms also showed induced spin polarizability ranged from –45.0% to –66.0%, except for O atoms in the centered slab of barrier layer, which showed relatively small polarization, –14.9%. Magnetic moments for the electrode Co atoms were calculated to be ∼1.74 μB with no significant variation across the electrode.

Normalization and correction factors for magnetic tunnel junction sensor performances comparison

2021 ◽  
pp. 1-1
Author(s):  
E. Monteblanco ◽  
A. Solignac ◽  
C. Chopin ◽  
J. Moulin ◽  
P. Belliot ◽  
...  
Keyword(s):  
Tunnel Junction ◽  
Magnetic Tunnel Junction ◽  
Correction Factors

scholarly journals Nanoscale domain wall devices with magnetic tunnel junction read and write

2021 ◽  
Vol 4 (6) ◽  
pp. 392-398 ◽  
Author(s):  
E. Raymenants ◽  
O. Bultynck ◽  
D. Wan ◽  
T. Devolder ◽  
K. Garello ◽  
...  
Keyword(s):  
Domain Wall ◽  
Tunnel Junction ◽  
Magnetic Tunnel Junction ◽  
Domain Wall Devices

scholarly journals A Dual Magnetic Tunnel Junction‐Based Neuromorphic Device

2020 ◽  
Vol 2 (12) ◽  
pp. 2070120
Author(s):  
Jeongmin Hong ◽  
Xin Li ◽  
Nuo Xu ◽  
Hong Chen ◽  
Stefano Cabrini ◽  
...  
Keyword(s):  
Tunnel Junction ◽  
Magnetic Tunnel Junction

scholarly journals Domain wall-magnetic tunnel junction spin–orbit torque devices and circuits for in-memory computing

2021 ◽  
Vol 118 (11) ◽  
pp. 112401
Author(s):  
Mahshid Alamdar ◽  
Thomas Leonard ◽  
Can Cui ◽  
Bishweshwor P. Rimal ◽  
Lin Xue ◽  
...  
Keyword(s):  
Domain Wall ◽  
Tunnel Junction ◽  
Magnetic Tunnel Junction ◽  
Spin Orbit
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