Predictions of a magnetic field-induced superconducting state in semiconductors, at fields well above H/sub c/ values for normal and high-T/sub 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/sub x/Ga/sub 1-x/As/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.
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机译：在正半导体中的磁场引起的超导状态预测在正常和高T / Sup C /超导体的H / Sub C /值的良好上，在脉冲磁场中具有高达700吨的脉冲磁场的动机实验。我们呈现出结果低密度3D电子系统限制在高质量的Al / Sub X / Ga / Sub 1-X / AS / GaAs抛物线量子井结构中，这是一种赋予该行为的主要候选者。数据显示通过脉冲产生的电磁噪声，该脉冲为500t的脉冲产生，然而，涡流加热排除了对现场诱导的超导性的观察。
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