Lifetimes of stark-shifted image states

被引：48

作者：

Crampin, S ^{[1
]}

机构：

[1] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.95.046801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The inelastic lifetimes of electrons in image-potential states at Cu(100) that are Stark shifted by the electrostatic tip-sample interaction in the scanning tunneling microscope are calculated using the many-body GW approximation. The results demonstrate that in typical tunneling conditions the image state lifetimes are significantly reduced from their field-free values. The Stark shift to higher energies increases the number of inelastic scattering channels that are available for decay, with field-induced changes in the image state wave function increasing the efficiency of the inelastic scattering through greater overlap with final state wave functions.

引用

收藏

页数：4

相关论文

共 22 条

[1] ELECTRON INTERFEROMETRY AT CRYSTAL-SURFACES [J].

BECKER, RS ;

GOLOVCHENKO, JA ;

SWARTZENTRUBER, BS .

PHYSICAL REVIEW LETTERS, 1985, 55 (09) :987-990

[2] Momentum-resolved lifetimes of image-potential states on Cu(100) -: art. no. 056805 [J].

Berthold, W ;

Höfer, U ;

Feulner, P ;

Chulkov, EV ;

Silkin, VM ;

Echenique, PM .

PHYSICAL REVIEW LETTERS, 2002, 88 (05) :568051-568054

[3] TUNNELING SPECTROSCOPY AND INVERSE PHOTOEMISSION - IMAGE AND FIELD STATES [J].

BINNIG, G ;

FRANK, KH ;

FUCHS, H ;

GARCIA, N ;

REIHL, B ;

ROHRER, H ;

SALVAN, F ;

WILLIAMS, AR .

PHYSICAL REVIEW LETTERS, 1985, 55 (09) :991-994

[4] Engineering electronic lifetimes in artificial atomic structures [J].

Braun, KF ;

Rieder, KH .

PHYSICAL REVIEW LETTERS, 2002, 88 (09) :4

[5] Probing hot-electron dynamics at surfaces with a cold scanning tunneling microscope [J].

Bürgi, L ;

Jeandupeux, O ;

Brune, H ;

Kern, K .

PHYSICAL REVIEW LETTERS, 1999, 82 (22) :4516-4519

[6] Image potential states on metal surfaces: binding energies and wave functions [J].

Chulkov, EV ;

Silkin, VM ;

Echenique, PM .

SURFACE SCIENCE, 1999, 437 (03) :330-352

[7] Lifetimes of image-potential states on copper surfaces [J].

Chulkov, EV ;

Sarria, I ;

Silkin, VM ;

Pitarke, JM ;

Echenique, PM .

PHYSICAL REVIEW LETTERS, 1998, 80 (22) :4947-4950

[8] Phase coherence length and quantum interference patterns at step edges -: art. no. 029701 [J].

Crampin, S ;

Kröger, J ;

Jensen, H ;

Berndt, R .

PHYSICAL REVIEW LETTERS, 2005, 95 (02)

[9] CONFINEMENT OF ELECTRONS TO QUANTUM CORRALS ON A METAL-SURFACE [J].

CROMMIE, MF ;

LUTZ, CP ;

EIGLER, DM .

SCIENCE, 1993, 262 (5131) :218-220

[10] Decay of electronic excitations at metal surfaces [J].

Echenique, PM ;

Berndt, R ;

Chulkov, EV ;

Fausterd, TH ;

Goldmann, A ;

Höfer, U .

SURFACE SCIENCE REPORTS, 2004, 52 (7-8) :219-317