A Spin Wave Phase Shifter Based on Polarization Current Control
A polarized current and spin wave technology, applied in waveguide devices, circuits, electrical components, etc., can solve the problems of low phase shift accuracy loss, difficulty in practical use, and difficult to accurately control the position, and achieve phase shift stability and Excellent accuracy, efficiency and energy consumption advantages, and the effect of reducing work energy consumption
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Embodiment 1
[0042] In the present embodiment, the size of the ferromagnetic layer as a resonator is: L 1 =150nm,w 1 =50nm, R=25nm, t 1 = 10nm; the size of the spin-wave waveguide is w 4 = 100nm, t 4 = 10nm, L 4 =2000nm; the size of the heavy metal layer is: L 2 =350nm, W 2 = 150nm, t 2 =30nm; the distance d between the spin-wave waveguide and the ferromagnetic layer=5nm; the spin-wave frequency is 10.5GHz. image 3 In the spin wave phase shifter provided by Embodiment 1 of the present invention, the schematic diagram when the magnetization state of the ferromagnetic layer is +y and -y; wherein, 1 and 3 are the spin wave waveguide and the ferromagnetic layer respectively, and 2 is Excited regions for spin waves. The phase shifter obtained in embodiment 1 is simulated, and the parameters are selected as follows: the ferromagnetic layer and the rectangular waveguide are permalloy, and its saturation magnetization Ms=8×10 5 A / m, anisotropy constant k=0J / m 3 , exchange constant A=12p...
Embodiment 2
[0044] In the present embodiment, the size of the ferromagnetic layer as a resonator is: L 1 =150nm, w 1 =50nm, R=25nm, t 1 = 2nm; the size of the spin wave guide is w 4 =50nm,t 4 = 4nm, L 4 =2000nm; the size of the heavy metal layer is: L 2 =350nm, W 2 = 150nm, t 2 =30nm; the distance d between the spin-wave waveguide and the ferromagnetic layer=2nm; the spin-wave frequency is 10.5GHz. The phase shifter obtained in embodiment 2 is simulated, and the parameters are selected as follows: the ferromagnetic layer and the rectangular waveguide are permalloy, and its saturation magnetization Ms=8×10 5 A / m, anisotropy constant k=0J / m 3 , exchange constant A=12pJ / m, damping coefficient α=0.005, polarization current density J=1e13J / m 2 . Figure 5 The simulation result of the spin wave phase shifter provided for the embodiment 2 of the present invention at a certain moment after the spin wave transmission is stable; wherein, (a) is the waveform diagram of the waveguide withou...
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