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Journal article
Boson peak as a probe of quantum effects in a glassy state of biomolecules: The case of L-cysteine
Physical review. E, Statistical, nonlinear, and soft matter physics, v 89(2), pp 022715-022715
19 Feb 2014
PMID: 25353517
Abstract
Some physical properties of hydrated biomolecules, e. g., the occurrence of a boson peak, have been recognized to resemble those of glassy states. The present work shows that quantum fluctuations play a fundamental role in describing the glassy state of biomolecules, particularly at lower hydration levels. There is a linear relationship between the quantumness and the slope of the temperature dependence of the boson peak frequency, which is used to classify the extent of quantum contributions to the glassy state of glasses in general. Lastly, we demonstrate that the boson peak two-band spectral structure that is observed in some cases can be directly linked to the anisotropy of the elastic properties of the material. The amino acid L-cysteine is studied in detail. The findings are compared with previously reported data for other macromolecules.
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Details
- Title
- Boson peak as a probe of quantum effects in a glassy state of biomolecules: The case of L-cysteine
- Creators
- T. A. Lima - Universidade Federal do ABCM. S. Ishikawa - Universidade Federal do ABCH. S. Martinho - Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Santo Andre, SP, Brazil
- Publication Details
- Physical review. E, Statistical, nonlinear, and soft matter physics, v 89(2), pp 022715-022715
- Publisher
- Amer Physical Soc
- Number of pages
- 5
- Grant note
- CNPq; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) CAPES; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) FAPESP; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000332179200010
- Scopus ID
- 2-s2.0-84896970446
- Other Identifier
- 991019299109404721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Physics, Fluids & Plasmas
- Physics, Mathematical