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Optical conductivity of unconventional charge-density-wave systems : Role of vertex corrections. / Aristov, D. N.; Zeyher, R.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 72, No. 11, 115118, 15.09.2005.

Research output: Contribution to journal › Article › peer-review

Harvard

Aristov, DN & Zeyher, R 2005, 'Optical conductivity of unconventional charge-density-wave systems: Role of vertex corrections', Physical Review B - Condensed Matter and Materials Physics, vol. 72, no. 11, 115118. https://doi.org/10.1103/PhysRevB.72.115118

APA

Aristov, D. N., & Zeyher, R. (2005). Optical conductivity of unconventional charge-density-wave systems: Role of vertex corrections. Physical Review B - Condensed Matter and Materials Physics, 72(11), [115118]. https://doi.org/10.1103/PhysRevB.72.115118

Vancouver

Aristov DN, Zeyher R. Optical conductivity of unconventional charge-density-wave systems: Role of vertex corrections. Physical Review B - Condensed Matter and Materials Physics. 2005 Sep 15;72(11). 115118. https://doi.org/10.1103/PhysRevB.72.115118

Author

Aristov, D. N. ; Zeyher, R. / Optical conductivity of unconventional charge-density-wave systems : Role of vertex corrections. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 72, No. 11.

BibTeX

@article{42c4320a615144f9bded09c237083a6c,
title = "Optical conductivity of unconventional charge-density-wave systems: Role of vertex corrections",
abstract = "The optical conductivity of a d-CDW conductor is calculated for electrons on a square lattice and a nearest-neighbor charge-charge interaction using the lowest-order conserving approximation. The spectral properties of the Drude-like peak at low frequencies and the broad hump due to transitions across the gap at large frequencies are discussed, also as a function of temperature and of the second-nearest neighbor hopping term t′. We find that vertex corrections enhance the dc conductivity, make the Drude peak narrower and provide a smooth transition from a renormalized regime at low to the bare theory at high frequencies. It is also shown that vertex corrections enhance the temperature dependence of the restricted optical sum leading to a non-negligible violation of the sum rule in the d-CDW state.",
author = "Aristov, {D. N.} and R. Zeyher",
year = "2005",
month = sep,
day = "15",
doi = "10.1103/PhysRevB.72.115118",
language = "English",
volume = "72",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "11",

}

RIS

TY - JOUR

T1 - Optical conductivity of unconventional charge-density-wave systems

T2 - Role of vertex corrections

AU - Aristov, D. N.

AU - Zeyher, R.

PY - 2005/9/15

Y1 - 2005/9/15

N2 - The optical conductivity of a d-CDW conductor is calculated for electrons on a square lattice and a nearest-neighbor charge-charge interaction using the lowest-order conserving approximation. The spectral properties of the Drude-like peak at low frequencies and the broad hump due to transitions across the gap at large frequencies are discussed, also as a function of temperature and of the second-nearest neighbor hopping term t′. We find that vertex corrections enhance the dc conductivity, make the Drude peak narrower and provide a smooth transition from a renormalized regime at low to the bare theory at high frequencies. It is also shown that vertex corrections enhance the temperature dependence of the restricted optical sum leading to a non-negligible violation of the sum rule in the d-CDW state.

AB - The optical conductivity of a d-CDW conductor is calculated for electrons on a square lattice and a nearest-neighbor charge-charge interaction using the lowest-order conserving approximation. The spectral properties of the Drude-like peak at low frequencies and the broad hump due to transitions across the gap at large frequencies are discussed, also as a function of temperature and of the second-nearest neighbor hopping term t′. We find that vertex corrections enhance the dc conductivity, make the Drude peak narrower and provide a smooth transition from a renormalized regime at low to the bare theory at high frequencies. It is also shown that vertex corrections enhance the temperature dependence of the restricted optical sum leading to a non-negligible violation of the sum rule in the d-CDW state.

UR - http://www.scopus.com/inward/record.url?scp=29844454109&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.72.115118

DO - 10.1103/PhysRevB.72.115118

M3 - Article

AN - SCOPUS:29844454109

VL - 72

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 11

M1 - 115118

ER -

ID: 36119191