Ultrafast phononic switching of magnetization

被引：117

作者：

Stupakiewicz, A. ^{[1
]}

Davies, C. S. ^{[2
,3
]}

Szerenos, K. ^{[3
]}

Afanasiev, D. ^{[4
]}

Rabinovich, K. S. ^{[5
]}

Boris, A. V. ^{[5
]}

Caviglia, A. ^{[4
]}

Kimel, A. V. ^{[3
]}

Kirilyuk, A. ^{[2
,3
]}

机构：

[1] Univ Bialystok, Fac Phys, Bialystok, Poland

[2] Radboud Univ Nijmegen, FELIX Lab, Nijmegen, Netherlands

[3] Radboud Univ Nijmegen, Inst Mol & Mat, Nijmegen, Netherlands

[4] Delft Univ Technol, Kavli Inst Nanosci, Delft, Netherlands

[5] Max Planck Inst Solid State Res, Stuttgart, Germany

来源：

NATURE PHYSICS | 2021年 / 17卷 / 04期

关键词：

PHASE-TRANSITIONS; ELECTRONIC PHASE;

D O I：

10.1038/s41567-020-01124-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Identifying efficient pathways to control and modify the order parameter of a macroscopic phase in materials is an important ongoing challenge. One way to do this is via the excitation of a high-frequency mode that couples to the order, and this is the ultimate goal of the field of ultrafast phase transitions(1,2). This is an especially interesting research direction in magnetism, where the coupling between spin and lattice excitations is required for magnetization reversal(3,4). However, previous attempts(5,6) have not demonstrated switching between magnetic states via resonant pumping of phonon modes. Here we show how an ultrafast resonant excitation of the longitudinal optical phonon modes in magnetic garnet films switches magnetization into a peculiar quadrupolar magnetic domain pattern, revealing the magneto-elastic mechanism of the switching. In contrast, the excitation of strongly absorbing transverse phonon modes results in a thermal demagnetization effect only.

引用

页码：489 / +

页数：15

共 42 条

[1] Damage in a Thin Metal Film by High-Power Terahertz Radiation [J].