Spin Dynamics and Low Energy Vibrations: Insights from Vanadyl-Based Potential Molecular Qubits

被引：128

作者：

Atzori, Matteo ^{[1
,2
]}

Tesi, Lorenzo ^{[1
,2
]}

Benci, Stefano ^{[1
,2
,3
]}

Lunghi, Alessandro ^{[4
]}

Righini, Roberto ^{[1
,2
,3
]}

Taschin, Andrea ^{[3
]}

Torre, Renato ^{[3
,5
]}

Sorace, Lorenzo ^{[1
,2
]}

Sessoli, Roberta ^{[1
,2
]}

机构：

[1] Univ Firenze, Dipartimento Chim Ugo Schiff, I-50019 Sesto Fiorentino, Italy

[2] Univ Firenze, INSTM RU, I-50019 Sesto Fiorentino, Italy

[3] Univ Firenze, European Lab Nonlinear Spect, I-150019 Sesto Fiorentino, Italy

[4] Trinity Coll Dublin, AMBER & CRANN, Sch Phys, Dublin 2, Ireland

[5] Uni Firenze, Dipartimento Fis Astron, I-150019 Sesto Fiorentino, Italy

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 12期

关键词：

TEMPERATURE QUANTUM COHERENCE; LATTICE-RELAXATION; LONG COHERENCE; TIMES; COMPLEXES; MAGNETS; DESIGN;

D O I：

10.1021/jacs.7b01266

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we report the investigation of the magnetization dynamics of a vanadyl complex with diethyldithiocarbamate (Et(2)dtc(-)) ligands, namely [VO-(Et(2)dtc)(2)] (1), in both solid-state and frozen solution. This showed an anomalous and unprecedentedly observed field dependence of the relaxation time, which was modeled with three contributions to the relaxation mechanism. The temperature dependence of the weight of the two processes dominating at low fields was found to well correlate with the low energy vibrations as determined by THz spectroscopy. This detailed experimental comparative study represents a fundamental step to understand the spin dynamics of potential molecular quantum bits, and enriches the guidelines to design molecule-based systems with enhanced quantum coherence.

引用

页码：4338 / 4341

页数：4

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