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黄昆先生是2005年7月6日逝世的,至今已经11周年了。他一直活在我的记忆中。又逢教师节,我赶写几个片段,寄托对导师的思念、感恩之情。1970年,江崎(Leo Esaki)和朱兆祥(Ray Tsu)在寻找具有负微分电阻的新器件时,提出了一个全新的革命性概念——半导体超晶格。两种不同禁带宽度的半导体交替生长组成超晶格时,由于相邻层能带之间的相互作用,电子在生长方向(z
Mr. Huang Kun died on July 6, 2005 and has been 11 years old. He has been living in my memory Also every teacher’s day, I rush to write a few fragments, pinned on the teacher’s thoughts, gratitude. In 1970, when Leo Esaki and Ray Tsu looked for new devices with negative differential resistance, he proposed a completely new and revolutionary concept, the semiconductor superlattice. When two kinds of semiconductors with different bandgap grow alternately and form superlattices, due to the interaction between the energy bands of adjacent layers, the electrons in the growth direction (z