We demonstrate a direct visualization of the magnetic hysteresis of a single-molecule magnet bis(phthalocyaninato)terbium(III) (TbPc2) adsorbed on the Co islands, which covers a submonolayer region of an Au(111) surface by utilizing the spin-polarized scanning tunneling microscope (SP-STM) and monitoring the magnetotunneling resistance. We found that the TbPc2 molecule is spin polarized and attached to the ferromagnetic Co islands. The result of the SP-STM measurements showed that the spin of TbPc2 is antiferromagnetically coupled to the magnetization of the Co island. In addition, we found an opening in the hysteresis curve even with the frozen magnetization of the Co island, unlike that with near-zero remanence typically reported for the bulk crystal and the nonmagnetic substrate.
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14 May 2019
Research Article|
May 10 2019
Spin properties of single-molecule magnet of double-decker Tb(III)-phthalocyanine (TbPc2) on ferromagnetic Co film characterized by spin polarized STM (SP-STM)
Special Collection:
Molecular Spintronics
Ferdous Ara
;
Ferdous Ara
1
Department of Chemistry, Graduate School of Science, Tohoku University
, Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
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Hirofumi Oka;
Hirofumi Oka
2
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
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Yasuyuki Sainoo;
Yasuyuki Sainoo
2
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
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Keiichi Katoh;
Keiichi Katoh
1
Department of Chemistry, Graduate School of Science, Tohoku University
, Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
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Masahiro Yamashita;
Masahiro Yamashita
1
Department of Chemistry, Graduate School of Science, Tohoku University
, Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
3
WPI Research Center, Advanced Institute for Materials Research, Tohoku University
, 2-1-1 Katahira, Aoba-Ku, Sendai 980-8577, Japan
4
School of Materials Science and Engineering, Nankai University
, Tianjin 300350, China
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Tadahiro Komeda
Tadahiro Komeda
a)
2
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
a)Author to whom correspondence should be addressed: tadahiro.komeda.a1@tohoku.ac.jp
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a)Author to whom correspondence should be addressed: tadahiro.komeda.a1@tohoku.ac.jp
Note: This paper is part of the Special Topic section “Molecular Spintronics” published in J. Appl. Phys. 125(14) (2019).
J. Appl. Phys. 125, 183901 (2019)
Article history
Received:
November 05 2018
Accepted:
April 18 2019
Citation
Ferdous Ara, Hirofumi Oka, Yasuyuki Sainoo, Keiichi Katoh, Masahiro Yamashita, Tadahiro Komeda; Spin properties of single-molecule magnet of double-decker Tb(III)-phthalocyanine (TbPc2) on ferromagnetic Co film characterized by spin polarized STM (SP-STM). J. Appl. Phys. 14 May 2019; 125 (18): 183901. https://doi.org/10.1063/1.5079964
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