[22p-12K-1~14] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)English Presentation

[22p-12K-1] Chirality Dependent Magnetoresistance in Helical poly(3,4-ethylenedioxythiophene)

〇Masami Komoike¹, Satoru Yoshida², Francesco Calavalle¹, Ryo Ohshima^1,3, Yuichiro Ando^1,3, Kazuo Akagi², Masashi Shiraishi^1,3 (1.Kyoto Univ., 2.Ritsumeikan Univ., 3.CSRN Kyoto Univ.)

Keywords:

chirality,PEDOT

Last two decades, chiral induced spin selectivity (CISS) has been attracting attentions in spintronics. CISS generates a finite spin polarized state when electrons travel through high resistive chiral molecules. Meanwhile, in low resistive chiral crystals it has been found a rectification effect called electrical magneto chiral anisotropy (eMChA), which seems to share certain feature with CISS, but shows also some non-trivial experimental differences. Interestingly the two effects which relates spin related phenomena to the symmetry of chiral materials cannot be explained by a unified and accepted model. For this reason, the use of highly conductive molecules can be a key to unveil the underlying physics.In this work, highly conductive helical poly(3,4-ethylenedioxythiophene) (H-PEDOT) synthesized on a silicon on insulator substrate is selected. Magnetoresistances of the right- and left-handed PEDOT are measured by rotating angle of an in-plane external magnetic field.