RESONANT-TUNNELING TRANSFER TIMES BETWEEN ASYMMETRIC GAAS AL0.35GA0.65AS DOUBLE QUANTUM-WELLS

被引：61

作者：

ALEXANDER, MGW ^{[1
]}

NIDO, M ^{[1
]}

RUHLE, WW ^{[1
]}

KOHLER, K ^{[1
]}

机构：

[1] FRAUNHOFER INST APPL SOLID STATE PHYS,W-7800 FREIBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.41.12295

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron tunneling through the barrier in asymmetric double-quantum-well structures is investigated by time-resolved picosecond luminescence spectroscopy. Change from nonresonant to resonant tunneling is acheived with a perpendicular electric field. Energetic alignment of electron subbands in the two wells strongly enhances tunneling transfer rates. The resonant transfer times decrease strongly with barrier thickness. The wells are coupled at resonance by energy-conserving scattering processes between states localized in a single well. The buildup of delocalized coherent states at resonance would lead to much shorter transfer times. © 1990 The American Physical Society.

引用

页码：12295 / 12298

页数：4

共 27 条

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