Electric field modulation of magnetic exchange in molecular helices

被引：71

作者：

Fittipaldi, Maria ^{[1
,2
]}

Cini, Alberto ^{[1
,2
]}

Annino, Giuseppe ^{[3
]}

Vindigni, Alessandro ^{[4
]}

Caneschi, Andrea ^{[2
,5
,6
,7
]}

Sessoli, Roberta ^{[2
,7
]}

机构：

[1] Univ Florence, Dept Phys & Astron, Sesto Fiorentino, Italy

[2] Univ Florence, INSTM Res Unit, Sesto Fiorentino, Italy

[3] IPCF CNR, Ist & Proc Chim Fis, Pisa, Italy

[4] Swiss Fed Inst Technol, Lab Festkorperphys, Zurich, Switzerland

[5] Univ Florence, DIEF Dept Ind Engn, Florence, Italy

[6] Univ Florence, INSTM Res Unit, Florence, Italy

[7] Univ Florence, Dept Chem Ugo Schiff, Sesto Fiorentino, Italy

来源：

NATURE MATERIALS | 2019年 / 18卷 / 04期

关键词：

EPR FREQUENCIES; CHAINS;

D O I：

10.1038/s41563-019-0288-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The possibility to operate on magnetic materials through the application of electric rather than magnetic fields-promising faster, more compact and energy efficient circuits-continues to spur the investigation of magnetoelectric effects. Symmetry considerations, in particular the lack of an inversion centre, characterize the magnetoelectric effect. In addition, spin-orbit coupling is generally considered necessary to make a spin system sensitive to a charge distribution. However, a magnetoelectric effect not relying on spin-orbit coupling is appealing for spin-based quantum technologies. Here, we report the detection of a magnetoelectric effect that we attribute to an electric field modulation of the magnetic exchange interaction without atomic displacement. The effect is visible in electron paramagnetic resonance absorption of molecular helices under electric field modulation and confirmed by specific symmetry properties and spectral simulation.

引用

页码：329 / +

页数：7

共 37 条

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