Resonant tunneling of holes in AlSb/GaSb/AlSb double-barrier heterostructures

Abstract
We have made the first observations of resonant tunneling in the AlSb/GaSb material system. Double‐barrier p‐type heterostructures exhibit two distinct features in their current‐voltage characteristics, indicating resonant tunneling via confined valence‐band states. The measured energy level positions are consistent with a substantial valence‐band offset of approximately 0.4 eV.