Do tunneling states and boson peak persist or disappear in extremely stabilized glasses?

  • M.A. Ramos Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
  • T. Pérez-Castañeda Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
  • R.J. Jiménez-Riobóo Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), E-28049 Madrid, Spain
  • C. Rodríguez-Tinoco Nanomaterials and Microsystems Group, Physics Department, and MATGAS Research Centre, Universitat Autónoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
  • J. Rodríguez-Viejo Nanomaterials and Microsystems Group, Physics Department, and MATGAS Research Centre, Universitat Autónoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain

Abstract

We have investigated how extreme thermal histories in glasses can affect their universal properties at low temperatures. In particular, we have studied two materials which allow us to access highly-stable glassy states, as well as their corresponding conventional glasses, in two different ways: (i) amber [1], the fossilized natural resin, which is a glass which has experienced a hyperaging process for about one hundred million years; and (ii) ultrastable thin-film glasses of indomethacin [2] (an organic molecule commonly used in pharmaceuticals), prepared by physical vapor deposition at temperatures around 85% of its glass-transition temperature.

References

1 T. Pérez-Castañeda, R. J. Jiménez-Riobóo and M. A. Ramos, Phys. Rev. Lett. 112, 165901 (2014).

2 T. Pérez-Castañeda, C. Rodríguez-Tinoco, J. Rodriguez-Viejo and M. A. Ramos, PNAS 111, 11275 (2014).

3 C. C. Yu and A. J. Leggett, Comments Cond. Mat. Phys. 14, 231 (1988).
Published
2015-01-21
How to Cite
RAMOS, M.A. et al. Do tunneling states and boson peak persist or disappear in extremely stabilized glasses?. Recent Contributions to Physics (Rec.Contr.Phys.), [S.l.], v. 50, n. 3, p. 13-14, jan. 2015. ISSN 2663-2276. Available at: <https://bph.kaznu.kz/index.php/zhuzhu/article/view/796>. Date accessed: 22 oct. 2020.
Section
Condensed Matter Physics and Materials Science Problems. NanoScience

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