Beleggia Marco, Pozzi Giulio
Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs, Lyngby, Denmark.
Microscopy (Oxf). 2013 Jun;62 Suppl 1:S43-54. doi: 10.1093/jmicro/dft008. Epub 2013 Mar 26.
The research on flux line lattices and pancake vortices in superconducting materials, carried out within a long and fruitful collaboration with Akira Tonomura and his group at the Hitachi Advanced Research Laboratory, led us to develop a mathematical framework, based on the reciprocal representation of the magnetic vector potential, that enables us to simulate realistic phase images of fluxons. The aim of this paper is to review the main ideas underpinning our computational framework and the results we have obtained throughout the collaboration. Furthermore, we outline how to generalize the approach to model other samples and structures of interest, in particular thin ferromagnetic films, ferromagnetic nanoparticles and p-n junctions.
我与日立先进研究实验室的朝本晃（Akira Tonomura）及其团队进行了长期且卓有成效的合作，开展了对超导材料中磁通线晶格和煎饼状涡旋的研究。这使我们基于磁矢势的互易表示法，开发出一个数学框架，该框架能让我们模拟磁通子的真实相位图像。本文旨在回顾支撑我们计算框架的主要思想以及整个合作过程中所取得的成果。此外，我们还概述了如何推广该方法以对其他感兴趣的样品和结构进行建模，特别是薄铁磁膜、铁磁纳米颗粒和 p-n 结。
