Unconventional electronic Raman spectra of borocarbide superconductors

In Sang Yang; M. V. Klein; T. P. Devereaux; I. R. Fisher; P. C. Canfield

doi:10.1016/S0921-4534(00)01106-0

Unconventional electronic Raman spectra of borocarbide superconductors

In Sang Yang, M. V. Klein, T. P. Devereaux, I. R. Fisher, P. C. Canfield

Department of Physics

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

3 Scopus citations

Abstract

Borocarbide superconductors, which are thought to be conventional BCS-type superconductors, are not so conventional in several electronic Raman properties. Anisotropic gap-like features and finite scattering strength below the gap were observed for the RNi₂B₂C (R = Lu, Y) systems in our previous study. The effects of Co-doping on the 2Δ gap-like features and the finite scattering strength below and above the gap are studied in R = Lu (B = B¹¹) system. In superconducting states, Co-doping strongly suppresses the 2Δ peak in both B_2g and B_1g symmetries. Raman cross-section calculation which includes inelastic scattering shows a relatively good fit to the features above the 2Δ peak, while it does not fully account for the features below the peak.

Original language	English
Pages (from-to)	2259-2260
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	341-348 (IV)
DOIs	https://doi.org/10.1016/S0921-4534(00)01106-0
State	Published - Nov 2000
Event	International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA Duration: 20 Feb 2000 → 25 Feb 2000

Bibliographical note

Funding Information:
ISY and MVK were partiallys upportedu nder NSF 9705131a nd 9120000. ISY was also supported by KOSEF 1999-2-114-005-A5m. es Lab-oratoryi s operatedb y U.S. DOE by Iowa State Universityu nderC ontractN o. W-7405-Eng-82.

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title = "Unconventional electronic Raman spectra of borocarbide superconductors",

abstract = "Borocarbide superconductors, which are thought to be conventional BCS-type superconductors, are not so conventional in several electronic Raman properties. Anisotropic gap-like features and finite scattering strength below the gap were observed for the RNi2B2C (R = Lu, Y) systems in our previous study. The effects of Co-doping on the 2Δ gap-like features and the finite scattering strength below and above the gap are studied in R = Lu (B = B11) system. In superconducting states, Co-doping strongly suppresses the 2Δ peak in both B2g and B1g symmetries. Raman cross-section calculation which includes inelastic scattering shows a relatively good fit to the features above the 2Δ peak, while it does not fully account for the features below the peak.",

author = "Yang, {In Sang} and Klein, {M. V.} and Devereaux, {T. P.} and Fisher, {I. R.} and Canfield, {P. C.}",

note = "Funding Information: ISY and MVK were partiallys upportedu nder NSF 9705131a nd 9120000. ISY was also supported by KOSEF 1999-2-114-005-A5m. es Lab-oratoryi s operatedb y U.S. DOE by Iowa State Universityu nderC ontractN o. W-7405-Eng-82.; International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI ; Conference date: 20-02-2000 Through 25-02-2000",

year = "2000",

month = nov,

doi = "10.1016/S0921-4534(00)01106-0",

language = "English",

volume = "341-348 (IV)",

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journal = "Physica C: Superconductivity and its Applications",

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TY - JOUR

T1 - Unconventional electronic Raman spectra of borocarbide superconductors

AU - Yang, In Sang

AU - Klein, M. V.

AU - Devereaux, T. P.

AU - Fisher, I. R.

AU - Canfield, P. C.

N1 - Funding Information: ISY and MVK were partiallys upportedu nder NSF 9705131a nd 9120000. ISY was also supported by KOSEF 1999-2-114-005-A5m. es Lab-oratoryi s operatedb y U.S. DOE by Iowa State Universityu nderC ontractN o. W-7405-Eng-82.

PY - 2000/11

Y1 - 2000/11

N2 - Borocarbide superconductors, which are thought to be conventional BCS-type superconductors, are not so conventional in several electronic Raman properties. Anisotropic gap-like features and finite scattering strength below the gap were observed for the RNi2B2C (R = Lu, Y) systems in our previous study. The effects of Co-doping on the 2Δ gap-like features and the finite scattering strength below and above the gap are studied in R = Lu (B = B11) system. In superconducting states, Co-doping strongly suppresses the 2Δ peak in both B2g and B1g symmetries. Raman cross-section calculation which includes inelastic scattering shows a relatively good fit to the features above the 2Δ peak, while it does not fully account for the features below the peak.

AB - Borocarbide superconductors, which are thought to be conventional BCS-type superconductors, are not so conventional in several electronic Raman properties. Anisotropic gap-like features and finite scattering strength below the gap were observed for the RNi2B2C (R = Lu, Y) systems in our previous study. The effects of Co-doping on the 2Δ gap-like features and the finite scattering strength below and above the gap are studied in R = Lu (B = B11) system. In superconducting states, Co-doping strongly suppresses the 2Δ peak in both B2g and B1g symmetries. Raman cross-section calculation which includes inelastic scattering shows a relatively good fit to the features above the 2Δ peak, while it does not fully account for the features below the peak.

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U2 - 10.1016/S0921-4534(00)01106-0

DO - 10.1016/S0921-4534(00)01106-0

M3 - Conference article

AN - SCOPUS:0343833193

SN - 0921-4534

VL - 341-348 (IV)

SP - 2259

EP - 2260

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI

Y2 - 20 February 2000 through 25 February 2000

ER -

Unconventional electronic Raman spectra of borocarbide superconductors

Abstract

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