[12/20] The 6th WPI-AIMR Joint Seminar in FY2013

12/06/2013

The 6th WPI-AIMR Joint Seminar in FY2013

Title

Onsager Reciprocity in Spin Caloritronics

Speaker

Prof. Gerrit E.W. Bauer
(IMR/AIMR, Tohoku University)

Date

December 20 (Fri.), 2013 16:00-17:00

Venue

Seminar Room, 2nd floor, AIMR Main Bldg.

Abstract

Also called the 4th Law of Thermodynamics, the Onsager reciprocal relations express the equality of certain ratios between flows and forces in many-body systems close to equilibrium, as formalized later in the linear response theory by Kubo and others. The importance and usefulness of Onsager reciprocity to systemize observed and predict new effect as well as test consistency of theoretical frameworks is well established in physics and chemistry. Here I discuss the important role that Onsager reciprocity plays in spin caloritronics, the science and technology of understanding and controlling the coupled charge, spin, and heat currents in magnetic nanostructures.

seminars131206.jpg

Figure : Feynman diagram governing the Onsager reciprocal processes
of spin transfer torque and spin pumping
in normal metal (N)| ferromagnet F) spin valves.

Contact

General Affairs Section, AIMR Administrative Office

TEL : +81-22-217-5922
E-MAIL : wpi-soumu@wpi-aimr.tohoku.ac.jp