Spin properties of single-molecule magnet of double-decker Tb(III)-phthalocyanine (TbPc2) on ferromagnetic Co film characterized by spin polarized STM (SP-STM)

被引：7

作者：

Ara, Ferdous ^{[1
]}

Oka, Hirofumi ^{[2
]}

Sainoo, Yasuyuki ^{[2
]}

Katoh, Keiichi ^{[1
]}

Yamashita, Masahiro ^{[1
,3
,4
]}

Komeda, Tadahiro ^{[2
]}

机构：

[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Aoba Ku, Sendai, Miyagi 9808578, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Katahira 2-1-1, Sendai, Miyagi 9808577, Japan

[3] Tohoku Univ, Adv Inst Mat Res, WPI Res Ctr, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[4] Nankai Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2019年 / 125卷 / 18期

基金：

日本学术振兴会;

关键词：

MAGNETIZATION; NANOSTRUCTURES; CONFINEMENT; HYSTERESIS; ANISOTROPY; COMPLEXES; AU(111);

D O I：

10.1063/1.5079964

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：8