Two-level systems in myoglobin probed by non-Lorentzian hole broadening in a temperature-cycling experiment

Atusi Kurita, Yutaka Shibata, Takashi Kushida

研究成果: Article査読

15 被引用数 (Scopus)

抄録

We have measured the broadening of persistent spectral holes in H2-protoporphyrin-substituted myoglobin caused by temperature cycling between 4 and 70 K. Non-Lorentzian hole broadening has been observed for excursion temperatures above 40 K. This effect has been explained by assuming that the hole broadening is due to the transition-frequency shift of the chromophore by the random flips of the two-level systems, and that the these systems in the interior and in the exterior of the myoglobin molecule make different contributions to the broadening. From the analysis of the hole spectra, the number and the coupling strength of the TLS's in myoglobin have been determined.

本文言語English
ページ(範囲)4349-4352
ページ数4
ジャーナルPhysical review letters
74
21
DOI
出版ステータスPublished - 1995
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Two-level systems in myoglobin probed by non-Lorentzian hole broadening in a temperature-cycling experiment」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル