Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2168671
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Changes in the direct gate tunneling current are measured for strained p-channel metal-oxide-semiconductor field-effect transistors (MOSFETs) on (100) wafers for uniaxial and biaxial stress. Decreases/increases in the gate tunneling current for various stresses primarily result from repopulation into a subband with a larger/smaller out-of-plane effective mass. Strain-induced changes in the valence band offset between Si and SiO2 are also important but play a secondary role. Hole tunneling current is found to decrease for biaxial and uniaxial compressive stress and increase for biaxial tensile stress. The hole tunneling data is modeled using k center dot p self-consistent solution to Poisson and Schrodinger's equation, and a transfer matrix method.(c) 2006 American Institute of Physics.
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