Electron-Beam Mapping of Vibrational Modes with Nanometer Spatial Resolution

被引：86

作者：

Dwyer, C. ^{[1
]}

Aoki, T. ^{[2
]}

Rez, P. ^{[1
]}

Chang, S. L. Y. ^{[2
]}

Lovejoy, T. C. ^{[3
]}

Krivanek, O. L. ^{[1
,3
]}

机构：

[1] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[2] Arizona State Univ, LeRoy Eyring Ctr Solid State Sci, Tempe, AZ 85287 USA

[3] Nion Co, 11511 NE 118th St, Kirkland, WA 98034 USA

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 25期

关键词：

SPECTROSCOPY; MICROSCOPE;

D O I：

10.1103/PhysRevLett.117.256101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that a focused beam of high-energy electrons can be used to map the vibrational modes of a material with a spatial resolution of the order of one nanometer. Our demonstration is performed on boron nitride, a polar dielectric which gives rise to both localized and delocalized electron-vibrational scattering, either of which can be selected in our off-axial experimental geometry. Our experimental results are well supported by our calculations, and should reconcile current controversy regarding the spatial resolution achievable in vibrational mapping with focused electron beams.

引用

页数：5

共 22 条

[1]

Chen C, 2014, NAT COMMUN, V5, DOI [10.1038/ncomms4312, 10.1038/ncomms4357]

[2] Localization of high-energy electron scattering from atomic vibrations [J].