Generation and time-resolved detection of coherently controlled electric currents at surfaces

Jens Güdde, Marcus Rohleder, Torsten Meier, Stephan W Koch, Ulrich Höfer

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We demonstrate a technique for the generation and detection of electron currents at surfaces on a femtosecond time scale with a contact-free experimental setup based on a combination of coherent control and photoemission spectroscopy. We have applied this technique for electrons excited into image-potential states on a Cu(100) surface that form a free-electron-like band in the direction parallel to the surface. The photogeneration of currents is described by optical Bloch equations for a multiband model. By incorporating field-induced interband and intersubband transitions together with intraband accelerations into the model, the observed phase dependence of the population and of the current can be reproduced.

Original languageEnglish (US)
Pages (from-to)461-465
Number of pages5
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume6
Issue number2
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

electric current
free electrons
electrons
photoelectric emission
spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Generation and time-resolved detection of coherently controlled electric currents at surfaces. / Güdde, Jens; Rohleder, Marcus; Meier, Torsten; Koch, Stephan W; Höfer, Ulrich.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 6, No. 2, 2009, p. 461-465.

Research output: Contribution to journalArticle

@article{dd66ea163911492aa8c12dec2c673972,
title = "Generation and time-resolved detection of coherently controlled electric currents at surfaces",
abstract = "We demonstrate a technique for the generation and detection of electron currents at surfaces on a femtosecond time scale with a contact-free experimental setup based on a combination of coherent control and photoemission spectroscopy. We have applied this technique for electrons excited into image-potential states on a Cu(100) surface that form a free-electron-like band in the direction parallel to the surface. The photogeneration of currents is described by optical Bloch equations for a multiband model. By incorporating field-induced interband and intersubband transitions together with intraband accelerations into the model, the observed phase dependence of the population and of the current can be reproduced.",
author = "Jens G{\"u}dde and Marcus Rohleder and Torsten Meier and Koch, {Stephan W} and Ulrich H{\"o}fer",
year = "2009",
doi = "10.1002/pssc.200880350",
language = "English (US)",
volume = "6",
pages = "461--465",
journal = "Physica Status Solidi (C) Current Topics in Solid State Physics",
issn = "1862-6351",
publisher = "Wiley-VCH Verlag",
number = "2",

}

TY - JOUR

T1 - Generation and time-resolved detection of coherently controlled electric currents at surfaces

AU - Güdde, Jens

AU - Rohleder, Marcus

AU - Meier, Torsten

AU - Koch, Stephan W

AU - Höfer, Ulrich

PY - 2009

Y1 - 2009

N2 - We demonstrate a technique for the generation and detection of electron currents at surfaces on a femtosecond time scale with a contact-free experimental setup based on a combination of coherent control and photoemission spectroscopy. We have applied this technique for electrons excited into image-potential states on a Cu(100) surface that form a free-electron-like band in the direction parallel to the surface. The photogeneration of currents is described by optical Bloch equations for a multiband model. By incorporating field-induced interband and intersubband transitions together with intraband accelerations into the model, the observed phase dependence of the population and of the current can be reproduced.

AB - We demonstrate a technique for the generation and detection of electron currents at surfaces on a femtosecond time scale with a contact-free experimental setup based on a combination of coherent control and photoemission spectroscopy. We have applied this technique for electrons excited into image-potential states on a Cu(100) surface that form a free-electron-like band in the direction parallel to the surface. The photogeneration of currents is described by optical Bloch equations for a multiband model. By incorporating field-induced interband and intersubband transitions together with intraband accelerations into the model, the observed phase dependence of the population and of the current can be reproduced.

UR - http://www.scopus.com/inward/record.url?scp=77951532189&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951532189&partnerID=8YFLogxK

U2 - 10.1002/pssc.200880350

DO - 10.1002/pssc.200880350

M3 - Article

AN - SCOPUS:77951532189

VL - 6

SP - 461

EP - 465

JO - Physica Status Solidi (C) Current Topics in Solid State Physics

JF - Physica Status Solidi (C) Current Topics in Solid State Physics

SN - 1862-6351

IS - 2

ER -