Slow Magnetic Relaxation of Ni(III) Complexes toward Molecular Spin Qubits

被引：7

作者：

Toshima, Keiga ^{[1
]}

Sato, Tetsu ^{[1
]}

Horii, Yoji ^{[2
]}

Sato, Kazunobu ^{[3
]}

Sugisaki, Kenji ^{[3
]}

Breedlove, B. K. ^{[1
]}

Takaishi, Shinya ^{[1
]}

Li, Zhao-Yang ^{[4
]}

Yamashita, Masahiro ^{[1
,4
]}

机构：

[1] Tohoku Univ, Grad Sch Sci, 6-3 Aramaki Aza Aoba,Aoba Ku, Sendai, Miyagi 9808578, Japan

[2] Nara Womens Univ, Fac Sci, Dept Chem, Nara 6308506, Japan

[3] Osaka Metropolitan Univ, Grad Sch Sci, Dept Chem & Mat Sci, 3-3-138 Sugimoto,Sumiyoshi Ku, Osaka 5588585, Japan

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

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2023年 / 26卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Magnetic properties; Nickel; Spin qubits; Spin relaxation; Structure elucidation; TEMPERATURE QUANTUM COHERENCE; CRYSTAL-STRUCTURE; NICKEL(III); LIGAND; OSCILLATIONS; DESIGN;

D O I：

10.1002/ejic.202300125

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Molecule-based magnetic materials are promising candidates for molecular spin qubits, which utilize spin relaxation behavior. Various kinds of transition metal complexes with S=1/2 have been reported to act as spin qubits with long spin-spin relaxation times (T-2). However, the spin qubit properties of low-spin Ni(III) complexes are not as well known since Ni(III) compounds are often unstable. We report here the slow magnetic relaxation behavior and T-2 values for three kinds of low-spin Ni(III) based complexes with S=1/2 under magnetically diluted conditions. [Ni(cyclam)X-2]Y (cyclam=1,4,8,11-tetraazacyclotetradecane) with octahedral structures and [Ni(mnt)(2)](-) (mnt=maleonitriledithiolate) with a square-planar structure underwent slow magnetic relaxations in the presence of a dc magnetic bias field. From electron spin resonance (ESR) spectroscopy, the Ni(III) complexes exhibited observable T-2, indicating that Ni(III) complexes are promising candidates for use as molecule-based spin qubits.

引用

页数：7

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