Title :
The extreme quantum limit of 2D and 3D electron systems in semiconductor heterostructures
Author :
Kane, B.E. ; Dzurak, A.S. ; Facer, G.R. ; Clark, R.G. ; Starrett, R.P. ; Skougarevsky, A. ; Lumpkin, N.E. ; Brooks, J.S. ; Engel, L.W. ; Miura, N. ; Takamasu, T. ; Yokoi, H. ; Pfeiffer, L. ; West, K.W. ; Goettee, J.D. ; Rickel, D.G. ; Fowler, C.M. ; Tatse
Author_Institution :
Sch. of Phys., New South Wales Univ., Sydney, NSW, Australia
Abstract :
Predictions of a magnetic field-induced superconducting state in semiconductors, at fields well above Hc values for normal and high-Tc superconductors, have motivated experiments in pulsed magnetic fields up to 700 T. We present results on low density 3D electron systems confined in high-quality AlxGa1-xAs/GaAs parabolic quantum well structures, a prime candidate for this behaviour. The data show immunity to electromagnetic noise generated by the pulse for fields up to 500 T, however, eddy-current heating precluded the observation of field-induced superconductivity
Keywords :
III-V semiconductors; aluminium compounds; eddy currents; gallium arsenide; induction heating; magnetoresistance; semiconductor quantum wells; 2D electron systems; 3D electron systems; 50 to 500 T; AlxGa1-xAs/GaAs parabolic quantum well structures; AlGaAs-GaAs; eddy-current heating; electromagnetic noise immunity; extreme quantum limit; low density 3D electron systems; magnetic field-induced superconducting state; magnetotransport; pulsed magnetic fields; semiconductor heterostructures; Electromagnetic fields; Electromagnetic interference; Electrons; Gallium arsenide; Magnetic confinement; Magnetic fields; Magnetic noise; Noise generators; Semiconductor device noise; Superconductivity;
Conference_Titel :
Optoelectronic and Microelectronic Materials And Devices Proceedings, 1996 Conference on
Conference_Location :
Canberra, ACT
Print_ISBN :
0-7803-3374-8
DOI :
10.1109/COMMAD.1996.610103
