The 83rd JSAP Autumn Meeting 2022

Presentation information

Poster presentation

10 Spintronics and Magnetics » 10 Spintronics and Magnetics(Poster)

[21a-P02-1~50] 10 Spintronics and Magnetics(Poster)

Wed. Sep 21, 2022 9:30 AM - 11:30 AM P02 (Arena)

9:30 AM - 11:30 AM

[21a-P02-14] Observation of magnetoresistance in Ni78Fe22/C8-BTBT/Ni78Fe22 nanojunctions at room temperature

Mizuki Matsuzaka1, Yuma Sasaki2, Kyohei Hayashi1, Takahiro Misawa2, Takashi Komine3, Tomoyuki Akutagawa4, Masaya Fujioka2, Junji Nishii2, Hideo Kaiju1,5 (1.Keio Univ., 2.RIES, Hokkaido Univ., 3.Ibaraki Univ., 4.IMRAM, Tohoku Univ., 5.CSRN, Keio Univ.)

Keywords:molecular spintronics, magnetoresistance, nanojunction

We fabricate magnetic nanojunctions, which consist of high-mobility molecules, 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT) sandwiched between two Ni78Fe22 thin films with crossed edges and investigate spin transport properties. Consequently, we observe a clear positive MR effect, that is, RAP > RP, where RP and RAP are the resistances in the parallel (P) and antiparallel (AP) configurations, respectively, of two magnetic electrodes in the Ni78Fe22/C8-BTBT/Ni78Fe22 nanojunctions at room temperature. The obtained results indicate that the spin signal through the C8-BTBT molecules can be successfully observed. This study provides a novel nanofabrication technique and opens up new opportunities for research in high-mobility molecular nano-spintronics.