scholarly journals Dipolar field effects on the critical current for spin transfer switch of iron and permalloy nanoelements

2014 ◽  
Vol 115 (17) ◽  
pp. 17D130 ◽  
Author(s):  
L. L. Oliveira ◽  
J. T. S. Dantas ◽  
R. M. Souza ◽  
A. S. Carriço ◽  
Ana L. Dantas
Keyword(s):  
Critical Current ◽  
Spin Transfer ◽  
Dipolar Field ◽  
Field Effects

SUPERCONDUCTING FILM WITH AN ARRAY OF MAGNETIC NANOSTRIPES

2013 ◽  
Vol 27 (15) ◽  
pp. 1362020 ◽  
Author(s):  
K. KIM ◽  
K. K. D. RATHNAYAKA ◽  
I. F. LYUKSYUTOV ◽  
D. G. NAUGLE
Keyword(s):  
Magnetic Field ◽  
Transport Properties ◽  
Critical Current ◽  
Film Surface ◽  
Critical Currents ◽  
Superconducting Film ◽  
Insulating Layer ◽  
Field Effects ◽  
Matching Field ◽  
The Magnetic Field

We present studies of the transport properties of a Sn superconducting film with an array of parallel nickel magnetic nanostripes (800 nm period) deposited on top of a germanium insulating layer covering the Sn film surface. The critical current parallel to the stripes is larger than the critical current perpendicular to the stripes. Both critical currents demonstrate strong hysteresis and matching field effects. We have observed strong hysteresis in the resistance dependence on the magnetic field.

Pressure and magnetic field effects on the transport critical current in Hg0.82Re0.18Ba2Ca2Cu3O8+δ ceramic superconductor

2004 ◽  
Vol 408-410 ◽  
pp. 756-758
Author(s):  
J.L. Gonzalez ◽  
E.V.L. de Mello ◽  
E.S. Yugue ◽  
E. Baggio-Saitovitch ◽  
M.T.D. Orlando
Keyword(s):  
Magnetic Field ◽  
Critical Current ◽  
Magnetic Field Effects ◽  
Ceramic Superconductor ◽  
Field Effects

Reducing the critical current for spin-transfer switching of perpendicularly magnetized nanomagnets

2009 ◽  
Vol 94 (1) ◽  
pp. 012502 ◽  
Author(s):  
S. Mangin ◽  
Y. Henry ◽  
D. Ravelosona ◽  
J. A. Katine ◽  
Eric E. Fullerton
Keyword(s):  
Critical Current ◽  
Spin Transfer

Simulation and Stability Analysis of Current and Transverse Field Effects on Spin Transfer Noise

2007 ◽  
Vol 43 (6) ◽  
pp. 2313-2315 ◽  
Author(s):  
Li Wang ◽  
Guchang Han ◽  
Yuankai Zheng ◽  
Bo Liu
Keyword(s):  
Stability Analysis ◽  
Transverse Field ◽  
Spin Transfer ◽  
Field Effects

scholarly journals Theoretical Study of Field-Free Switching in PMA-MTJ Using Combined Injection of STT and SOT Currents

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1345
Author(s):  
Shaik Wasef ◽  
Hossein Fariborzi
Keyword(s):  
Critical Current ◽  
Theoretical Study ◽  
Tunnel Junctions ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Orbit ◽  
Micromagnetic Simulations ◽  
Spintronic Devices ◽  
Current Densities ◽  
The Relationship

Field-free switching in perpendicular magnetic tunnel junctions (P-MTJs) can be achieved by combined injection of spin-transfer torque (STT) and spin-orbit torque (SOT) currents. In this paper, we derived the relationship between the STT and SOT critical current densities under combined injection. We included the damping–like torque (DLT) and field-like torque (FLT) components of both the STT and SOT. The results were derived when the ratio of the FLT to the DLT component of the SOT was positive. We observed that the relationship between the critical SOT and STT current densities depended on the damping constant and the magnitude of the FLT component of the STT and the SOT current. We also noted that, unlike the FLT component of SOT, the magnitude and sign of the FLT component of STT did not have a significant effect on the STT and SOT current densities required for switching. The derived results agreed well with micromagnetic simulations. The results of this work can serve as a guideline to model and develop spintronic devices using a combined injection of STT and SOT currents.

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