Electromodulated infrared transmission spectrum near the CDW gap edge in blue bronze

B. M. Emerling; M. E. Itkis; J. W. Brill

doi:10.1016/S0379-6779(98)00658-4

Electromodulated infrared transmission spectrum near the CDW gap edge in blue bronze

B. M. Emerling, M. E. Itkis, J. W. Brill

Physics And Astronomy

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We compare the changes in the transmission (τ) spectra of blue bronze caused by changing temperature (Δτ_T) and by polarizing the charge-density-wave (CDW) with an electric field near threshold (Δτ_v), for photon energies between 800 and 1200 cm^-1. Unlike at lower energies, the two spectra differ qualitatively in this spectral region, near the edge of the CDW gap. While temperature mainly affects phonon damping, CDW polarization shifts phonon energies. Both Δτ_V/τ and Δτ_T/τ are expected to change sign for energies above the gap, but this occurs much more gradually (as a function of energy) in the electromodulated spectrum.

Original language	English
Pages (from-to)	2598-2599
Number of pages	2
Journal	Synthetic Metals
Volume	103
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(98)00658-4
State	Published - Jun 24 1999
Event	Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier Duration: Jul 12 1998 → Jul 18 1998

Bibliographical note

Funding Information:
We thank R.E. Thome for providing crystals. This research was supported by the U.S. National Science Foundation, grants DMR-9300507 and EPS-9452895.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0379-6779(98)00658-4

Cite this

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title = "Electromodulated infrared transmission spectrum near the CDW gap edge in blue bronze",

abstract = "We compare the changes in the transmission (τ) spectra of blue bronze caused by changing temperature (ΔτT) and by polarizing the charge-density-wave (CDW) with an electric field near threshold (Δτv), for photon energies between 800 and 1200 cm-1. Unlike at lower energies, the two spectra differ qualitatively in this spectral region, near the edge of the CDW gap. While temperature mainly affects phonon damping, CDW polarization shifts phonon energies. Both ΔτV/τ and ΔτT/τ are expected to change sign for energies above the gap, but this occurs much more gradually (as a function of energy) in the electromodulated spectrum.",

author = "Emerling, {B. M.} and Itkis, {M. E.} and Brill, {J. W.}",

note = "Funding Information: We thank R.E. Thome for providing crystals. This research was supported by the U.S. National Science Foundation, grants DMR-9300507 and EPS-9452895.; Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) ; Conference date: 12-07-1998 Through 18-07-1998",

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T1 - Electromodulated infrared transmission spectrum near the CDW gap edge in blue bronze

AU - Emerling, B. M.

AU - Itkis, M. E.

AU - Brill, J. W.

N1 - Funding Information: We thank R.E. Thome for providing crystals. This research was supported by the U.S. National Science Foundation, grants DMR-9300507 and EPS-9452895.

PY - 1999/6/24

Y1 - 1999/6/24

N2 - We compare the changes in the transmission (τ) spectra of blue bronze caused by changing temperature (ΔτT) and by polarizing the charge-density-wave (CDW) with an electric field near threshold (Δτv), for photon energies between 800 and 1200 cm-1. Unlike at lower energies, the two spectra differ qualitatively in this spectral region, near the edge of the CDW gap. While temperature mainly affects phonon damping, CDW polarization shifts phonon energies. Both ΔτV/τ and ΔτT/τ are expected to change sign for energies above the gap, but this occurs much more gradually (as a function of energy) in the electromodulated spectrum.

AB - We compare the changes in the transmission (τ) spectra of blue bronze caused by changing temperature (ΔτT) and by polarizing the charge-density-wave (CDW) with an electric field near threshold (Δτv), for photon energies between 800 and 1200 cm-1. Unlike at lower energies, the two spectra differ qualitatively in this spectral region, near the edge of the CDW gap. While temperature mainly affects phonon damping, CDW polarization shifts phonon energies. Both ΔτV/τ and ΔτT/τ are expected to change sign for energies above the gap, but this occurs much more gradually (as a function of energy) in the electromodulated spectrum.

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DO - 10.1016/S0379-6779(98)00658-4

M3 - Conference article

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SN - 0379-6779

VL - 103

SP - 2598

EP - 2599

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

T2 - Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98)

Y2 - 12 July 1998 through 18 July 1998

ER -

Electromodulated infrared transmission spectrum near the CDW gap edge in blue bronze

Abstract

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