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Issue 44, 2015
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Spontaneous electric fields in solid carbon monoxide

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Abstract

Reflection–absorption infrared spectroscopy (RAIRS) is shown to provide a means of observing the spontelectric phase of matter, the defining characteristic of which is the occurrence of a spontaneous and powerful static electric field within a film of material. The presence of such a field is demonstrated here through the study of longitudinal–transverse optical splitting in RAIR spectra in films of carbon monoxide, based upon the deposition temperature dependence of this splitting. Analysis of spectral data, in terms of the vibrational Stark effect, allows the measurement of the polarization of spontelectric films, showing for example that solid carbon monoxide at 20 K may maintain a spontelectric field of 3.78 × 107 V m−1, representing a polarization of 3.34 × 10−4 cm−2. We comment on the astrophysical implications of polarized carbon monoxide ices, on the surface of cosmic grains in star-forming regions.

Graphical abstract: Spontaneous electric fields in solid carbon monoxide

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Publication details

The article was received on 31 Jul 2015, accepted on 21 Sep 2015 and first published on 21 Sep 2015


Article type: Paper
DOI: 10.1039/C5CP04536C
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Citation: Phys. Chem. Chem. Phys., 2015,17, 30177-30187

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    Spontaneous electric fields in solid carbon monoxide

    J. Lasne, A. Rosu-Finsen, A. Cassidy, M. R. S. McCoustra and D. Field, Phys. Chem. Chem. Phys., 2015, 17, 30177
    DOI: 10.1039/C5CP04536C

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