在介绍量子霍尔效应之前,首先回顾一下经典的霍尔效应,以加深对有关基本概念的理解。霍尔效应(Hall effect)是在1879年由美国人E.H.Hall发现的。如图1所示,在一块导体或半导体上沿x方向通以直流电流(电流密度为Jx),沿垂直于电流的z方向施加磁场Bz,则在垂直于电流和磁场的y方向上将产生一横向电场,这就是霍尔效应。
This is what physicists call the Hall effect. The bigger the magnetic field, the more the electrons are deflected; the bigger the current, the more electrons there are to deflect. Either way, the bigger the potential difference (known as the Hall voltage) will be. In other words, the ...
25. I shall neverforget the years I lived in thecountry with the farmers , has greateffect on my life . A. that ;which B. when ;which C. which ;that D. when ; who 免费查看参考答案及解析 题目: 5. Theprofessor walked into the lecutre hall, byhis assistant and a group of his ...
Chiral spin textures such as skyrmions are of interest to the field of spintronics for their potential use in future computing devices. Hall effect measurements are a simple and powerful method to probe the electronic and magnetic properties of materials. The topological Hall effect, which appears a...
17 November 2015 Published: 22 December 2015 Seng Ghee Tan1,2, Mansoor B. A. Jalil2,3, Cong Son Ho2, Zhuobin Siu2 & Shuichi Murakami4 Spin Hall effect (SHE) has been discussed in the context of Kubo formulation, geometric physics, spin orbit force, and numerous semi...
electronically by providing an output voltage proportional to magnetic flux density. As implied by its name, this device relies on the Hall effect. The Hall effect is the development of a voltage across a sheet of conductor when current is flowing and the conductor is placed in a magnetic ...
Linus: Between the wonderful performance staged, or the valuable friendships which I made in the process working and toiling together for one full semester, I can’t decide! Annie: Seeing everything come to life, piece by set piece, every sound effect and perfect line. I was watching some ...
We are then just being and don’t do anything, yet we would have had a big effect on him. This could be seen as a method that women would take as one wouldn’t have done anything, while the need to do something is a more masculine method. If the other person wants our advice, ...
This is e.g., at the origin of the re-entrant integer QH effect25,26, which has also been predicted27 and observed in higher LLs of graphene28. The stripe phase strongly breaks the ‘rotational’ symmetry and exhibits a large anisotropy in the DC diagonal resistance. Meanwhile for the N...
Hall effect of light. Phys. Rev. Lett. 93, 083901 (2004). Article ADS Google Scholar Bliokh, K. Y. & Bliokh, Y. P. Conservation of angular momentum, transverse shift, and spin Hall effect in reflection and refraction of an electromagnetic wave packet. Phys. Rev. Lett. 96, 073903 (...