Seminars & Symposium

[6/27] The 3rd WPI-AIMR Joint Seminar in FY2014

The 3rd WPI-AIMR Joint Seminar in FY2014

Title

Mechanical generation of spin current

Speaker

Dr. Mamoru Matsuo
(Advanced Science Research Center, Japan Atomic Energy Agency)

Date

June 27 (Fri.), 2014 16:00-17:00

Venue

Seminar Room, 2nd floor, WPI-AIMR Main Bldg.

Abstract

Spin current, a flow of spin angular momentum, is a key concept in spintronics [1]. To create and manipulate spin currents, electromagnetic fields, magnetization dynamics, and spin-orbit coupling have been used. Recently, we have theoretically shown that spin current can be generated using mechanical motion including rigid rotation [2], linear acceleration [3], and elastic deformations [4]. Here I will introduce the background and our recent study on spin-current generation due to mechanical motion.

Fig. Spin current generation due to rotational deformations in a nonmagnetic metal. In the presence of the surface acoustic wave, gradient of an effective magnetic field is induced along the y-axis, and spin current is generated along the y-axis.

References

• [1] S. Maekawa, S. O. Valenzuela, E. Saitoh, and T. Kimura ed. “Spin Current”, Oxford University Press (2012).
• [2] M. Matsuo et al., Phys. Rev. Lett 106, 076601 (2011).
• [3] M. Matsuo et al., Phys. Rev. B 84, 104410 (2011).
• [4] M. Matsuo et al., Phys. Rev. B87, 180402(R) (2013); Phys. Rev. B87, 115301 (2013).

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