Spin wave device and logic circuit using spin wave device

A logic circuit using a spin wave device, comprising:

• first and second thin line-shaped stacked bodies including first ferromagnetic layers and nonmagnetic layers formed on the first ferromagnetic layers, the first and second stacked bodies merging in an interference portion;
• a first electrode of a nonmagnetic material formed in a first region on the first nonmagnetic layer of the first stacked body;
• a second electrode of the nonmagnetic material formed in a second region on the first nonmagnetic layer of the second stacked body;
• a third electrode of a ferromagnetic material formed in a third region on the first nonmagnetic layer of the merged stacked body;
• and
• electric-field applying means for applying an electric field to the first and second electrodes to thereby generate different spin waves in the first ferromagnetic layer according to input signals, wherein
• when the spin waves interfere in the interference portion, the logic circuit applies an arithmetic operation to the two spin waves induced from the first electrode and the second electrode, and
• the logic circuit detects, with a magnetoresistance effect, a phase or amplitude of a propagated spin wave, which is an arithmetic operation result, in the third electrode.