GIANT PLASMON EXCITATION IN FREE C-60 AND C-70 MOLECULES STUDIED BY PHOTOIONIZATION

被引：355

作者：

HERTEL, IV ^{[1
]}

STEGER, H ^{[1
]}

DEVRIES, J ^{[1
]}

WEISSER, B ^{[1
]}

MENZEL, C ^{[1
]}

KAMKE, B ^{[1
]}

KAMKE, W ^{[1
]}

机构：

[1] UNIV FREIBURG,FREIBURGER MAT FORSCHUNGSZENTRUM,W-7800 FREIBURG,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.68.784

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Single-photon ionization of C60 and C70 has been studied using synchrotron radiation in an energy range from the ionization potential (7.54 +/- 0.04 eV for C60; 7.3 +/- 0.2 eV for C70) up to 35 eV. The photoion yield is dominated by a strong resonance at about 20 eV with a FWHM of approximately 10 eV. We interpret this as being due to autoionization via the giant plasmon resonance recently predicted in the RPA approximation. C60 and C70 Offer the unique possibility for a quantitative comparison of this collective excitation in the free molecule with that observed in the solid phase by electron-energy-loss spectroscopy at about 28 eV.

引用

页码：784 / 787

页数：4

共 16 条

[1] COLLECTIVE PLASMON EXCITATIONS IN C60 CLUSTERS [J].

BERTSCH, GF ;

BULGAC, A ;

TOMANEK, D ;

WANG, Y .

PHYSICAL REVIEW LETTERS, 1991, 67 (19) :2690-2693

[2]

BRAGA M, 1991, ASTRON ASTROPHYS, V245, P232

[3] SHAPE RESONANCE IN 4D INNER-SHELL PHOTOIONIZATION SPECTRA OF ANTIMONY CLUSTERS [J].

BRECHIGNAC, C ;

BROYER, M ;

CAHUZAC, P ;

DEFRUTOS, M ;

LABASTIE, P ;

ROUX, JP .

PHYSICAL REVIEW LETTERS, 1991, 67 (10) :1222-1225

[4]

CAMPBELL EEB, 1991, PHYS REV LETT, V67, P1968

[5]

DEVRIES J, IN PRESS CHEM PHYS L

[6] HIGH-RESOLUTION ELECTRON-ENERGY-LOSS SPECTROSCOPY OF THIN-FILMS OF C60 ON SI(100) [J].

GENSTERBLUM, G ;

PIREAUX, JJ ;

THIRY, PA ;

CAUDANO, R ;

VIGNERON, JP ;

LAMBIN, P ;

LUCAS, AA ;

KRATSCHMER, W .

PHYSICAL REVIEW LETTERS, 1991, 67 (16) :2171-2174

[7] DISCRETE-VARIATIONAL-X-ALPHA ELECTRONIC-STRUCTURE STUDIES OF THE SPHERICAL C-60 CLUSTER - PREDICTION OF IONIZATION-POTENTIAL AND ELECTRONIC-TRANSITION ENERGY [J].

HALE, PD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (19) :6087-6088

[8] PHOTOIONISATION STUDIES OF HOMOGENEOUS ARGON AND KRYPTON CLUSTERS USING TPEPICO [J].

KAMKE, W ;

DEVRIES, J ;

KRAUSS, J ;

KAISER, E ;

KAMKE, B ;

HERTEL, IV .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1989, 14 (04) :339-351

[9]

KRUMMACHER S, IN PRESS

[10] OPTICAL-SPECTRUM OF THE ICOSAHEDRAL C60 - FOLLENE-60 [J].

LARSSON, S ;

VOLOSOV, A ;

ROSEN, A .

CHEMICAL PHYSICS LETTERS, 1987, 137 (06) :501-504

← 1 2 →