Accurate ab initio determination of ballistic electron emission spectroscopy Application to Au/Ge

Abstract : Ab initio nonequilibrium Keldysh formalism based on an N-order renormalization technique is used to compute I (V) ballistic electron emission microscopy characteristics at the Au/Ge(001) interface. Such a formalism quantitatively reproduces precise experimental measurements under ultrahigh vacuum and low- temperature conditions. At T = 0 K, the ballistic current follows the law (V - V-SB)(2.1), V(SB )being the Schottky barrier. At T > 0 K, temperature effects become significant near the onset and must be taken into account to identify an accurate value for V-SB from a best-fit procedure. We find two values for V-SB, 0.67 and 0.75 eV, which we associate with two different atomic registries at the interface.
Document type :
Journal articles
Complete list of metadatas

Cited literature [50 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-01973596
Contributor : Laurent Jonchère <>
Submitted on : Monday, January 14, 2019 - 2:00:43 PM
Last modification on : Friday, August 23, 2019 - 3:10:07 PM

File

Gerbi_Accurate ab initio deter...
Files produced by the author(s)

Identifiers

Citation

A. Gerbi, C. Gonzalez, R. Buzio, N. Manca, D. Marre, et al.. Accurate ab initio determination of ballistic electron emission spectroscopy Application to Au/Ge. Physical Review B : Condensed matter and materials physics, American Physical Society, 2018, 98 (20), pp.205416. ⟨10.1103/PhysRevB.98.205416⟩. ⟨hal-01973596⟩

Share

Metrics

Record views

21

Files downloads

13