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Excitations in Metmyoglobin crystals at low temperatures |
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| Authors: | G. P. Singh H. J. Schink H. v. Löhneysen F. Parak S. Hunklinger |
| Affiliation: | (1) FB Physik der Universität, Postfach 5560, D-5100 Konstanz, Germany;(2) 2. Physikalisches Institut der Rheinisch-Westfälischen Technischen Hochschule, Templergraben 55, D-7750 Aachen, Germany;(3) Institut für Physikalische Chemie der Universität, Schloßplatz 4, D-4400 Münster, Germany;(4) Institut für Angewandte Physik der Universität, Albert-Überle-Strasse 3-5, D-6900 Heidelberg, Germany |
| Abstract: | Specific heat and dielectric constant of Metmyoglobin crystals at low temperatures are measured and found to be similar to those of amorphous dielectrics. This provides evidence for the existence of two level systems in the protein. Possibility of many conformational substates and the frozen in disorder in the protein is proposed as the origin of these excitations. |
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