Controlling vortex motion and THz radiation in high temperature superconductors.

控制高温超导体中的涡旋运动和太赫兹辐射。

• 批准号: EP/D072581/1
• 负责人: Sergey Saveliev
• 金额: $ 61.32万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD072581%2F1
• 关键词: Controlling; vortex; motion; THz; radiation

During last five years I have focused on the very 'hot' topic of vortex dynamics --- Dr. A. Abrikosov got a Nobel Prize in 2003 for discovering the vortex lattice in type II superconductors. In contrast to a usual approach of studying vortex dynamics itself, I have concentrated on how to manipulate vortices in nano-devices. This proposal is based on my recent research and contains two main themes: (i) how to manipulate vortices in ratchet devices, (ii) how to generate, filter, detect, or amplify THz radiation using Josephson vortices in layered superconductors. Both of these topics were key subjects at recent vortex conferences (International Vortex Workshop 2005 http://www.tifr.res.in/~ivw10/ in India, VORTEX IV http://fys.kuleuven.be/vsm/projects/nes/Vortex%20IV%20abstractbook.pdf in Crete, ISS Tsukuba, 2005 http://www.istec.or.jp/ISS/ in Japan), at which I presented three invited talks this year. I have adequate experience to solve this problem because, on one hand, I have worked with top-experts (Prof. Fabio Marchesoni, Prof. Peter Hnggi) on the theory of stochastic processes and transport of small particles in noisy environments for four years and, on the other hand, I have also studied vortex dynamics (with Prof. L. Fisher, Prof. A. Rakhmanov, Prof. K. Kadowaki, Prof. F. Nori, Prof. A. Maeda, Prof. S. Bending) for more than ten years. Both themes of the proposed research are very important for applications: (i) it has been experimentally shown by Dr. R. Wnderberger that SQUID sensitivity strongly increases when using a ratchet device to remove vortices; (ii) the control of THz radiation is very important for various applications in astronomy, chemistry, biology and medicine, including THz imaging, spectroscopy, tomography, medical diagnosis, health monitoring, environmental control, as well as chemical and biological identification. Thus, this project, especially thanks to collaboration with experimentalists, can result in the development of new vortex ratchet & THz devices and, thus, have a big impact in improving the quality of life. The possibility of collaborating with experts on vortex dynamics and ratchet transport (Profs. S. Bending, Dr. S. Gordeev) and in nonlinear optics and photonic crystals (Prof. David Bird, Dr Dmitry Skryabin and the terahertz technology group) motivates my choice of the host organization.

在过去的五年里，我一直专注于涡旋动力学这个非常热门的话题-A·阿布里科索夫博士因在第二类超导体中发现涡旋晶格而在2003年获得诺贝尔奖。与通常研究涡旋动力学本身的方法不同，我专注于如何在纳米设备中操纵涡流。这一建议基于我最近的研究，包含两个主要主题：(I)如何操纵棘轮器件中的涡旋；(Ii)如何利用层状超导体中的约瑟夫森涡旋来产生、过滤、检测或放大THz辐射。这两个主题都是最近的涡旋会议(2005年印度国际涡旋研讨会http://www.tifr.res.in/~ivw10/、克里特岛涡旋IV http://fys.kuleuven.be/vsm/projects/nes/Vortex%20IV%20abstractbook.pdf、筑波空间站2005年http://www.istec.or.jp/ISS/)的关键议题，我今年在会上做了三次特邀演讲。我有足够的经验来解决这个问题，因为一方面，我与顶级专家(Fabio Marchesoni教授、Peter Hnggi教授)在嘈杂环境中的随机过程和小颗粒输运理论方面合作了四年，另一方面，我也研究了涡旋动力学(与L.Fisher教授、A.Rakhmanov教授、K.Kadowaki教授、F.Nori教授、A.Maeda教授、S.Bending教授)已有十多年。拟议研究的这两个主题对应用都非常重要：(I)R.Wnderberger博士通过实验证明，使用棘轮设备去除涡流时，鱿鱼的敏感度会大大增加；(Ii)对THz辐射的控制对于天文学、化学、生物和医学的各种应用非常重要，包括THz成像、光谱分析、断层扫描、医疗诊断、健康监测、环境控制以及化学和生物鉴定。因此，这个项目，特别是由于与实验者的合作，可以导致新的涡旋棘轮和太赫兹设备的开发，从而对提高生活质量产生重大影响。与涡旋动力学和棘轮传输方面的专家合作的可能性(教授。在非线性光学和光子晶体领域(David Bird教授、Dmitry Skryabin博士和太赫兹技术团队)，我选择了主办机构。

项目成果

Chirality tunneling and quantum dynamics for domain walls in mesoscopic ferromagnets

介观铁磁体中畴壁的手性隧道和量子动力学

• DOI: 10.1103/physrevb.77.134425
• 发表时间: 2008
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Galkina E

Transport and localization in periodic and disordered graphene superlattices

周期性和无序石墨烯超晶格中的传输和局域化

• DOI: 10.48550/arxiv.0810.0926
• 发表时间: 2008
• 作者: Bliokh Y

Electron Beam Instability in Left-Handed Media

左手介质中的电子束不稳定性

• DOI: 10.48550/arxiv.0804.1168
• 发表时间: 2008
• 作者: Bliokh Y

Electron-beam instability in left-handed media.

• DOI: 10.1103/physrevlett.100.244803
• 发表时间: 2008-04
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Y. Bliokh;S. Savel’ev;F. Nori

Unusual Resonators: Plasmonics, Metamaterials, and Random Media

不寻常的谐振器：等离激元、超材料和随机介质

• DOI: 10.48550/arxiv.0708.2653
• 发表时间: 2007
• 作者: Bliokh K