6 papers
Thermal-magnetic noise measurement of spin-torque effects on ferromagnetic resonance in MgO-based magnetic tunnel junctions
Yongfeng Guan, Jonathan Z. Sun, Xin Jiang +3
Thermal-magnetic noise at ferromagnetic resonance (T-FMR) can be used to measure magnetic perpendicular anisotropy of nanoscale magnetic tunnel junctions (MTJs). For this purpose,…
Sensitivity of spin-torque diodes for frequency-tunable resonant microwave detection
C. Wang, Y. -T. Cui, J. Z. Sun +3
We calculate the efficiency with which magnetic tunnel junctions can be used as resonant detectors of incident microwave radiation via the spin-torque diode effect. The expression…
Bias and angular dependence of spin-transfer torque in magnetic tunnel junctions
C. Wang, Y. -T. Cui, J. Z. Sun +3
We use spin-transfer-driven ferromagnetic resonance (ST-FMR) to measure the spin-transfer torque vector T in MgO-based magnetic tunnel junctions as a function of the offset angle b…
Measurement of the Spin-Transfer-Torque Vector in Magnetic Tunnel Junctions
J. C. Sankey, Y. -T. Cui, R. A. Buhrman +3
Spin-polarized currents can transfer spin angular momentum to a ferromagnet, generating a torque that can efficiently reorient its magnetization. Achieving quantitative measurement…
Thin-Film Trilayer Manganate Junctions
Jonathan Z. Sun
Spin-dependent conductance across a manganate-barrier-manganate junction has recently been demonstrated. The junction is a LaSrMnO% -SrTiO-La Sr$…
Temperature- and Bias-dependence of magnetoresistance in doped manganite thin film trilayer junctions
J. Z. Sun, D. W. Abraham, K. Roche +1
Thin film trilayer junction of LaSrMnO - SrTiO - LaSrMnO shows a factor of 9.7 change in resistance, in a magnetic field around 100…