A Three-Terminal Spin-Wave Device for Logic Applications

Details A Three-Terminal Spin-Wave Device for Logic Applications A Three-Terminal Spin-Wave Device for Logic Applications

2008-10-30

arxiv.org/abs/0810.5589v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

We demonstrate a three-terminal spin wave-based device utilizing spin wave interference. The device consists of three coplanar transmission lines inductively coupled to the 100nm thick CoFe film. Two spin wave signals are excited by microwave fields produced by electric current in two sets of lines, and the output signal is detected by the third set. The initial phases of the spin wave signals are controlled by the direction of the current flow in the excitation set of lines. Experimental data show prominent output signal modulation as a function of the relative phase (in-phase and out-of phase) of two input signals. The micrometer scale device operates in the GHz frequency range and at room temperature. Our experimental results show that spin-wave devices exploiting spin wave interference may be scaled to micrometer and nanometer scales for potential logic circuit application.

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