波動関数の染み出し（浸み出し）

US7843981(JP2008060396, HAMAMATSU PHOTONICS KK)
"However, if the barrier layer 191 is excessively thin, the wave function penetration（波動関数のしみ出し）is great and causes a leak current, so that the thickness must be properly adjusted by considering this. In detail, when the thickness of the barrier layer 191 is set to 3.5 nm, the anticrossing gap becomes about 7 meV."