Slow dynamics and instability ins

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Standard

Slow dynamics and instability ins. / Almairac, R.; Bordallo, H.; Bulou, A.; Nouet, J.

I: Physical Review B - Condensed Matter and Materials Physics, Bind 55, Nr. 13, 01.01.1997, s. 8249-8256.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Almairac, R, Bordallo, H, Bulou, A & Nouet, J 1997, 'Slow dynamics and instability ins', Physical Review B - Condensed Matter and Materials Physics, bind 55, nr. 13, s. 8249-8256. https://doi.org/10.1103/PhysRevB.55.8249

APA

Almairac, R., Bordallo, H., Bulou, A., & Nouet, J. (1997). Slow dynamics and instability ins. Physical Review B - Condensed Matter and Materials Physics, 55(13), 8249-8256. https://doi.org/10.1103/PhysRevB.55.8249

Vancouver

Almairac R, Bordallo H, Bulou A, Nouet J. Slow dynamics and instability ins. Physical Review B - Condensed Matter and Materials Physics. 1997 jan. 1;55(13):8249-8256. https://doi.org/10.1103/PhysRevB.55.8249

Author

Almairac, R. ; Bordallo, H. ; Bulou, A. ; Nouet, J. / Slow dynamics and instability ins. I: Physical Review B - Condensed Matter and Materials Physics. 1997 ; Bind 55, Nr. 13. s. 8249-8256.

Bibtex

@article{0974f0f266514cafb7a235119c1351d9,
title = "Slow dynamics and instability ins",
abstract = "The low-frequency dynamics of (Formula presented) has been investigated in the temperature range T=300-15 K. The dispersion surfaces at room temperature display a deep valley located along the (0.5, ζ, 0.5) zone-boundary line. This valley becomes deeper when T decreases, showing a soft-mode behavior. In addition a new depression appears at low-temperature along the (ξ, 0.5, 0.5) line, corresponding to an incipient instability toward an incommensurate phase. A symmetry analysis of the vibration spectrum including the compatibility relations between the different irreducible representations, is presented. The soft-mode symmetry is determined as belonging to the (Formula presented) representation. The present results are compared to previous Raman and x-ray investigations performed on this compound.",
author = "R. Almairac and H. Bordallo and A. Bulou and J. Nouet",
year = "1997",
month = jan,
day = "1",
doi = "10.1103/PhysRevB.55.8249",
language = "English",
volume = "55",
pages = "8249--8256",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "13",

}

RIS

TY - JOUR

T1 - Slow dynamics and instability ins

AU - Almairac, R.

AU - Bordallo, H.

AU - Bulou, A.

AU - Nouet, J.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The low-frequency dynamics of (Formula presented) has been investigated in the temperature range T=300-15 K. The dispersion surfaces at room temperature display a deep valley located along the (0.5, ζ, 0.5) zone-boundary line. This valley becomes deeper when T decreases, showing a soft-mode behavior. In addition a new depression appears at low-temperature along the (ξ, 0.5, 0.5) line, corresponding to an incipient instability toward an incommensurate phase. A symmetry analysis of the vibration spectrum including the compatibility relations between the different irreducible representations, is presented. The soft-mode symmetry is determined as belonging to the (Formula presented) representation. The present results are compared to previous Raman and x-ray investigations performed on this compound.

AB - The low-frequency dynamics of (Formula presented) has been investigated in the temperature range T=300-15 K. The dispersion surfaces at room temperature display a deep valley located along the (0.5, ζ, 0.5) zone-boundary line. This valley becomes deeper when T decreases, showing a soft-mode behavior. In addition a new depression appears at low-temperature along the (ξ, 0.5, 0.5) line, corresponding to an incipient instability toward an incommensurate phase. A symmetry analysis of the vibration spectrum including the compatibility relations between the different irreducible representations, is presented. The soft-mode symmetry is determined as belonging to the (Formula presented) representation. The present results are compared to previous Raman and x-ray investigations performed on this compound.

UR - http://www.scopus.com/inward/record.url?scp=0642366218&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.55.8249

DO - 10.1103/PhysRevB.55.8249

M3 - Journal article

AN - SCOPUS:0642366218

VL - 55

SP - 8249

EP - 8256

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 13

ER -

ID: 209602352