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

fYear

1996

fDate

8-11 Dec 1996

Firstpage

187

Lastpage

191

Abstract

Predictions of a magnetic field-induced superconducting state in semiconductors, at fields well above H_c values for normal and high-T_c 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 Al_xGa_1-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; Al_xGa_1-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;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronic and Microelectronic Materials And Devices Proceedings, 1996 Conference on

Conference_Location

Canberra, ACT

Print_ISBN

0-7803-3374-8

Type

conf

DOI

10.1109/COMMAD.1996.610103

Filename

610103