Mechanisms of high-order perturbative photoemission from Cu(001)

被引：55

作者：

Bisio, F

Nyvlt, M

Franta, J

Petek, H

Kirschner, J

机构：

[1] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany

[2] CNR, INFM, Unita Genova, I-16146 Genoa, Italy

[3] Charles Univ, Inst Phys, Fac Math & Phys, CZ-12116 Prague 2, Czech Republic

[4] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.96.087601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observed high-order 2- to 4-photon photoemission and above threshold photoemission (ATP) processes with 3.07 eV light from the Cu(001) surface. The intensity of 3-photon photoemission via excitation through the n=1 image potential state significantly exceeded that of the 2-photon process. The ATP occurs either via single photon transitions from the image potential resonances above the vacuum level or by multiphoton transitions from image potential states below the vacuum level. The experimental ratio of the m- to (m+1)-photon process yields is sensitive to the electronic band structure of the solid.

引用

收藏

页数：4

相关论文

共 22 条

[1] Experimental evidence of above-threshold photoemission in solids [J].

Banfi, F ;

Giannetti, C ;

Ferrini, G ;

Galimberti, G ;

Pagliara, S ;

Fausti, D ;

Parmigiani, F .

PHYSICAL REVIEW LETTERS, 2005, 94 (03)

[2] VELOCITY DEPENDENCE OF BINDING-ENERGIES AND LIFETIMES OF IMAGE STATES AT SURFACES [J].

BAUSELLS, J ;

ECHENIQUE, PM .

PHYSICAL REVIEW B, 1986, 33 (02) :1471-1473

[3] 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

[4] ENERGY BAND STRUCTURE OF COPPER [J].

BURDICK, GA .

PHYSICAL REVIEW, 1963, 129 (01) :138-&

[5]

CARDONA M, 1978, PHOTOEMISSION SOLIDS, pCH1

[6] OBSERVATION OF ABOVE-THRESHOLD MULTIPHOTON PHOTOELECTRIC-EMISSION FROM IMAGE-POTENTIAL SURFACE-STATES [J].

FANN, WS ;

STORZ, R ;

BOKOR, J .

PHYSICAL REVIEW B, 1991, 44 (19) :10980-10982

[7] Ultrafast electron dynamics at metal interfaces: Intraband relaxation of image state electrons as friction [J].

Garrett-Roe, S ;

Shipman, ST ;

Szymanski, P ;

Strader, ML ;

Yang, A ;

Harris, CB .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (43) :20370-20378

[8] 2-PHOTON PHOTOEMISSION VIA IMAGE-POTENTIAL STATES [J].

GIESEN, K ;

HAGE, F ;

HIMPSEL, FJ ;

RIESS, HJ ;

STEINMANN, W .

PHYSICAL REVIEW LETTERS, 1985, 55 (03) :300-303

[9] FINAL-STATE SYMMETRY AND POLARIZATION EFFECTS IN ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY [J].

HERMANSON, J .

SOLID STATE COMMUNICATIONS, 1977, 22 (01) :9-11

[10] Ultrafast electron dynamics at Cu(111): Response of an electron gas to optical excitation [J].

Hertel, T ;

Knoesel, E ;

Wolf, M ;

Ertl, G .

PHYSICAL REVIEW LETTERS, 1996, 76 (03) :535-538