Microwave power generation by magnetic superlattices

被引：0
作者：
Littlejohn, S. [1 ]
Nogaret, A. [1 ]
Davies, S. R. [1 ]
Henini, M. [2 ]
Beere, H. E. [3 ]
Ritchie, D. A. [3 ]
机构：
[1] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England
[2] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源：
APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 24期
基金：
英国工程与自然科学研究理事会;
关键词：
INTER-CHIP; INTERCONNECT;
D O I：
10.1063/1.3670400
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on microwave power emission by ballistic electrons as they cross a region of spatially inhomogeneous magnetic field. Magnetic finger gates were fabricated at the surface of high mobility GaAs/AlGaAs Hall bars embedded in a coplanar waveguide. By modulating the current injected through the Hall bar and measuring the second harmonic of the signal rectified by a Schottky detector, we obtain the microwave power emitted by the superlattice. This power (similar to 6 W m(-2)) is compared to the fluorescence of electron spins that undergo spin resonance as they cross domains of opposite magnetic field. (C) 2011 American Institute of Physics. [doi:10.1063/1.3670400]
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