title: Anomalous Tunnel Magnetoresistance and Spin Transfer Torque in Magnetic Tunnel Junctions with Embedded Nanoparticles.
abstract: The tunnel magnetoresistance (TMR) in the magnetic tunnel junction (MTJ) with embedded nanoparticles (NPs) was calculated in range of the quantum-ballistic model. The simulation was performed for electron tunneling through the insulating layer with embedded magnetic and non-magnetic NPs within the approach of the double barrier subsystem connected in parallel to the single barrier one. This model can be applied for both MTJs with in-plane magnetization and perpendicular one. We also calculated the in-plane component of the spin transfer torque (STT) versus the applied voltage in MTJs with magnetic NPs and determined that its value can be much larger than in single barrier system (SBS) for the same tunneling thickness. The reported simulation reproduces experimental data of the TMR suppression and peak-like TMR anomalies at low voltages available in leterature.
authors.affiliation: Department of Physics, National Tsing Hua University, Hsinchu, Taiwan.|Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.|Institute of Physics, Kazan Federal University, Kazan, Russian Federation.
authors.forename: Arthur
authors.initials: A
authors.lastname: Useinov
authors.affiliation: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.
authors.forename: Lin-Xiu
authors.initials: LX
authors.lastname: Ye
authors.affiliation: Institute of Physics, Kazan Federal University, Kazan, Russian Federation.
authors.forename: Niazbeck
authors.initials: N
authors.lastname: Useinov
authors.affiliation: Graduate School of Materials Science, National Yunlin University of Science and Technology, Douliou, Taiwan.
authors.forename: Te-Ho
authors.initials: TH
authors.lastname: Wu
authors.affiliation: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.
authors.forename: Chih-Huang
authors.initials: CH
authors.lastname: Lai