scholarly journals Estimation of thermal stability factor and intrinsic switching current from switching distributions in spin-transfer-torque devices with out-of-plane magnetic anisotropy

AIP Advances ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 015011 ◽  
Author(s):  
R. Heindl ◽  
A. Chaudhry ◽  
S. E. Russek
Keyword(s):  
Thermal Stability ◽  
Magnetic Anisotropy ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Stability Factor ◽  
Switching Current ◽  
Out Of Plane

scholarly journals Critical switching current density of magnetic tunnel junction with shape perpendicular magnetic anisotropy through the combination of spin-transfer and spin-orbit torques

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Doo Hyung Kang ◽  
Mincheol Shin
Keyword(s):  
Magnetic Anisotropy ◽  
Current Density ◽  
Perpendicular Magnetic Anisotropy ◽  
Magnetic Tunnel Junction ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Orbit ◽  
Switching Current ◽  
20 Nm ◽  
Hybrid Switching

AbstractRecently, magnetic tunnel junctions (MTJs) with shape perpendicular magnetic anisotropy (S-PMA) have been studied extensively because they ensure high thermal stability at junctions smaller than 20 nm. Furthermore, spin-transfer torque (STT) and spin-orbit torque (SOT) hybrid switching, which guarantees fast magnetization switching and deterministic switching, has recently been achieved in experiments. In this study, the critical switching current density of the MTJ with S-PMA through the interplay of STT and SOT was investigated using theoretical and numerical methods. As the current density inducing SOT ($$J_{\text {SOT}}$$ J SOT ) increases, the critical switching current density inducing STT ($$J_{\text {STT,c}}$$ J STT,c ) decreases. Furthermore, for a given $$J_{\text {SOT}}$$ J SOT , $$J_{\text {STT,c}}$$ J STT,c increases with increasing thickness, whereas $$J_{\text {STT,c}}$$ J STT,c decreases as the diameter increases. Moreover, $$J_{\text {STT,c}}$$ J STT,c in the plane of thickness and spin-orbit field-like torque ($$\beta$$ β ) was investigated for a fixed $$J_{\text {SOT}}$$ J SOT and diameter. Although $$J_{\text {STT,c}}$$ J STT,c decreases with increasing $$\beta$$ β , $$J_{\text {STT,c}}$$ J STT,c slowly increases with increasing thickness and increasing $$\beta$$ β . The power consumption was investigated as a function of thickness and diameter at the critical switching current density. Experimental confirmation of these results using existing experimental techniques is anticipated.

scholarly journals High Performance MRAM with Spin-Transfer-Torque and Voltage-Controlled Magnetic Anisotropy Effects

2017 ◽  
Vol 7 (9) ◽  
pp. 929 ◽  
Author(s):  
Hao Cai ◽  
Wang Kang ◽  
You Wang ◽  
Lirida Naviner ◽  
Jun Yang ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
High Performance ◽  
Spin Transfer Torque ◽  
Spin Transfer
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