Photoinduced bulk-surface dynamics: Time resolved two photon photoemission signals at semiconductor surfaces

S. Ramakrishna; F. Willig; A. Knorr

doi:10.1016/j.susc.2004.03.067

Photoinduced bulk-surface dynamics: Time resolved two photon photoemission signals at semiconductor surfaces

S. Ramakrishna^*, F. Willig, A. Knorr

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

A free particle theory of photoinduced bulk-surface dynamics at semiconductor surfaces is developed wherein relaxation processes arising from electron-electron and electron-phonon scattering are treated phenomenologically. The role played by bulk-surface dynamics in the thermalization and cooling processes of the bulk and the complementary issue of how bulk dynamics influences the surface state occupancy are both studied. Time resolved 2PPE spectra is analysed both in the context of pure bulk as well as combined bulk-surface dynamics and its relation to the time dependent populations in the conduction band and surface states is discussed.

Original language	English (US)
Pages (from-to)	159-173
Number of pages	15
Journal	Surface Science
Volume	558
Issue number	1-3
DOIs	https://doi.org/10.1016/j.susc.2004.03.067
State	Published - Jun 1 2004

Keywords

Atomistic dynamics
Photoemission (total yield)
Semiconducting surfaces
Surface electronic phenomena (work function, surface potential, surface states, etc.)

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2004.03.067

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title = "Photoinduced bulk-surface dynamics: Time resolved two photon photoemission signals at semiconductor surfaces",

abstract = "A free particle theory of photoinduced bulk-surface dynamics at semiconductor surfaces is developed wherein relaxation processes arising from electron-electron and electron-phonon scattering are treated phenomenologically. The role played by bulk-surface dynamics in the thermalization and cooling processes of the bulk and the complementary issue of how bulk dynamics influences the surface state occupancy are both studied. Time resolved 2PPE spectra is analysed both in the context of pure bulk as well as combined bulk-surface dynamics and its relation to the time dependent populations in the conduction band and surface states is discussed.",

keywords = "Atomistic dynamics, Photoemission (total yield), Semiconducting surfaces, Surface electronic phenomena (work function, surface potential, surface states, etc.)",

author = "S. Ramakrishna and F. Willig and A. Knorr",

note = "Funding Information: We gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft through SPP 1093. S.R would like to thank Dr. L. T{\"o}ben for extensive and fruitful discussions.",

year = "2004",

month = jun,

day = "1",

doi = "10.1016/j.susc.2004.03.067",

language = "English (US)",

volume = "558",

pages = "159--173",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

number = "1-3",

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TY - JOUR

T1 - Photoinduced bulk-surface dynamics

T2 - Time resolved two photon photoemission signals at semiconductor surfaces

AU - Ramakrishna, S.

AU - Willig, F.

AU - Knorr, A.

N1 - Funding Information: We gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft through SPP 1093. S.R would like to thank Dr. L. Töben for extensive and fruitful discussions.

PY - 2004/6/1

Y1 - 2004/6/1

N2 - A free particle theory of photoinduced bulk-surface dynamics at semiconductor surfaces is developed wherein relaxation processes arising from electron-electron and electron-phonon scattering are treated phenomenologically. The role played by bulk-surface dynamics in the thermalization and cooling processes of the bulk and the complementary issue of how bulk dynamics influences the surface state occupancy are both studied. Time resolved 2PPE spectra is analysed both in the context of pure bulk as well as combined bulk-surface dynamics and its relation to the time dependent populations in the conduction band and surface states is discussed.

AB - A free particle theory of photoinduced bulk-surface dynamics at semiconductor surfaces is developed wherein relaxation processes arising from electron-electron and electron-phonon scattering are treated phenomenologically. The role played by bulk-surface dynamics in the thermalization and cooling processes of the bulk and the complementary issue of how bulk dynamics influences the surface state occupancy are both studied. Time resolved 2PPE spectra is analysed both in the context of pure bulk as well as combined bulk-surface dynamics and its relation to the time dependent populations in the conduction band and surface states is discussed.

KW - Atomistic dynamics

KW - Photoemission (total yield)

KW - Semiconducting surfaces

KW - Surface electronic phenomena (work function, surface potential, surface states, etc.)

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U2 - 10.1016/j.susc.2004.03.067

DO - 10.1016/j.susc.2004.03.067

M3 - Article

AN - SCOPUS:2342485993

SN - 0039-6028

VL - 558

SP - 159

EP - 173

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Photoinduced bulk-surface dynamics: Time resolved two photon photoemission signals at semiconductor surfaces

Abstract

Keywords

ASJC Scopus subject areas

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