Electronic transitions in KxC60 (0 ≤ x ≤ 6) from in situ absorption spectroscopy

T. Pichler, M. Matus, J. Kürti, H. Kuzmany

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

In situ optical absorption measurements at room temperature are reported for KxC60 (0 ≤ x ≤ 6). The main results are a strong bleaching of the peak at 3.5 eV, an increase and line broadening in the spectral range between 2 and 2.7 eV, an increase of a new structure around 1.3 eV and a strong change for the absorption at 0.47 eV with increasing potassium concentrations. From a fit of the absorption spectra of the three stable phases C60, K3C60 and K6C60 with a Kramers-Heisenberg dielectric function a definite assignment of the electronic transitions was found, which is in excellent agreement with LHS and LDA calculations. The line broadening in the C60 metallic phase is explained as resonating valence fluctuations.

Original languageEnglish
Pages (from-to)859-862
Number of pages4
JournalSolid State Communications
Volume81
Issue number10
DOIs
Publication statusPublished - 1992

Fingerprint

bleaching
Bleaching
Absorption spectroscopy
Light absorption
Potassium
Absorption spectra
potassium
absorption spectroscopy
optical absorption
valence
absorption spectra
room temperature
electronics
Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Electronic transitions in KxC60 (0 ≤ x ≤ 6) from in situ absorption spectroscopy. / Pichler, T.; Matus, M.; Kürti, J.; Kuzmany, H.

In: Solid State Communications, Vol. 81, No. 10, 1992, p. 859-862.

Research output: Contribution to journalArticle

Pichler, T. ; Matus, M. ; Kürti, J. ; Kuzmany, H. / Electronic transitions in KxC60 (0 ≤ x ≤ 6) from in situ absorption spectroscopy. In: Solid State Communications. 1992 ; Vol. 81, No. 10. pp. 859-862.
@article{2d433f71e59c428e830acb1f1aec8425,
title = "Electronic transitions in KxC60 (0 ≤ x ≤ 6) from in situ absorption spectroscopy",
abstract = "In situ optical absorption measurements at room temperature are reported for KxC60 (0 ≤ x ≤ 6). The main results are a strong bleaching of the peak at 3.5 eV, an increase and line broadening in the spectral range between 2 and 2.7 eV, an increase of a new structure around 1.3 eV and a strong change for the absorption at 0.47 eV with increasing potassium concentrations. From a fit of the absorption spectra of the three stable phases C60, K3C60 and K6C60 with a Kramers-Heisenberg dielectric function a definite assignment of the electronic transitions was found, which is in excellent agreement with LHS and LDA calculations. The line broadening in the C60 metallic phase is explained as resonating valence fluctuations.",
author = "T. Pichler and M. Matus and J. K{\"u}rti and H. Kuzmany",
year = "1992",
doi = "10.1016/0038-1098(92)90552-K",
language = "English",
volume = "81",
pages = "859--862",
journal = "Solid State Communications",
issn = "0038-1098",
publisher = "Elsevier Limited",
number = "10",

}

TY - JOUR

T1 - Electronic transitions in KxC60 (0 ≤ x ≤ 6) from in situ absorption spectroscopy

AU - Pichler, T.

AU - Matus, M.

AU - Kürti, J.

AU - Kuzmany, H.

PY - 1992

Y1 - 1992

N2 - In situ optical absorption measurements at room temperature are reported for KxC60 (0 ≤ x ≤ 6). The main results are a strong bleaching of the peak at 3.5 eV, an increase and line broadening in the spectral range between 2 and 2.7 eV, an increase of a new structure around 1.3 eV and a strong change for the absorption at 0.47 eV with increasing potassium concentrations. From a fit of the absorption spectra of the three stable phases C60, K3C60 and K6C60 with a Kramers-Heisenberg dielectric function a definite assignment of the electronic transitions was found, which is in excellent agreement with LHS and LDA calculations. The line broadening in the C60 metallic phase is explained as resonating valence fluctuations.

AB - In situ optical absorption measurements at room temperature are reported for KxC60 (0 ≤ x ≤ 6). The main results are a strong bleaching of the peak at 3.5 eV, an increase and line broadening in the spectral range between 2 and 2.7 eV, an increase of a new structure around 1.3 eV and a strong change for the absorption at 0.47 eV with increasing potassium concentrations. From a fit of the absorption spectra of the three stable phases C60, K3C60 and K6C60 with a Kramers-Heisenberg dielectric function a definite assignment of the electronic transitions was found, which is in excellent agreement with LHS and LDA calculations. The line broadening in the C60 metallic phase is explained as resonating valence fluctuations.

UR - http://www.scopus.com/inward/record.url?scp=0026837096&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026837096&partnerID=8YFLogxK

U2 - 10.1016/0038-1098(92)90552-K

DO - 10.1016/0038-1098(92)90552-K

M3 - Article

VL - 81

SP - 859

EP - 862

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

IS - 10

ER -