Vortex electron energy loss spectroscopy for near-field mapping of magnetic plasmons.
Vortex electron energy loss spectroscopy for near-field mapping of magnetic plasmons.
复制标题
用于磁等离子体近场测绘的涡旋电子能量损失光谱。
作者：
Z. Mohammadi;C. Van Vlack;S. Hughes;J. Bornemann;R. Gordon
本文介绍了涡旋电子束电子能量损失谱（EELS）的理论，简称涡旋EELS。应用该理论，使用时域有限差分法内的绿色函数计算，计算金属开口环谐振器（SRR）的空间分辨涡旋EELS图。用于SRR结构的涡旋EELS散射截面在通常用于金属纳米颗粒的常规EELS的数量级内。这是有前途的可行性，为未来的测量绘制出局部磁响应的金属纳米结构和表征其磁等离子体响应的应用，包括超材料。
The theory of vortex electron beam electron energy loss spectroscopy (EELS), or vortex-EELS for short, is presented. This theory is applied, using Green function calculations within the finite-difference time-domain method, to calculate spatially resolved vortex-EELS maps of a metal split ring resonator (SRR). The vortex-EELS scattering cross section for the SRR structure is within an order of magnitude of conventional EELS typically for metal nanoparticles. This is promising in terms of feasibility for future measurements to map out the local magnetic response of metal nanostructures and to characterize their magnetic plasmon response in applications, including metamaterials.
影响因子：
8.6
作者：
Bliokh, Konstantin Yu.;Bliokh, Yury P.;Nori, Franco
通讯作者：
Nori, Franco