No far-infrared-spectroscopic gap in clean and dirty high-Tc superconductors

D. Mandrus; Michael C. Martin; C. Kendziora; D. Koller; L. Forro; L. Mihaly

doi:10.1103/PhysRevLett.70.2629

No far-infrared-spectroscopic gap in clean and dirty high-Tc superconductors

D. Mandrus
, Michael C. Martin
, C. Kendziora
, D. Koller
, L. Forro
, L. Mihaly

Physics and Astronomy

Stony Brook University
Swiss Federal Institute of Technology Lausanne

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

31 Scopus citations

Abstract

We report far-infrared transmission measurements on single crystal samples derived from Bi2Sr2CaCu2O8. The impurity scattering rate of the samples was varied by electron-beam irradiation, 50 MeV O+616 ion irradiation, heat treatment in vacuum, and Y doping. Although substantial changes in the infrared spectra were produced, in no case was a feature observed that could be associated with the superconducting energy gap. These results all but rule out ''clean limit'' explanations for the absence of the spectroscopic gap in this material, and provide evidence that the superconductivity in Bi2Sr2CaCu2O8 is gapless.

Original language	English
Pages (from-to)	2629-2632
Number of pages	4
Journal	Physical Review Letters
Volume	70
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.70.2629
State	Published - 1993

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10.1103/PhysRevLett.70.2629

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title = "No far-infrared-spectroscopic gap in clean and dirty high-Tc superconductors",

abstract = "We report far-infrared transmission measurements on single crystal samples derived from Bi2Sr2CaCu2O8. The impurity scattering rate of the samples was varied by electron-beam irradiation, 50 MeV O+616 ion irradiation, heat treatment in vacuum, and Y doping. Although substantial changes in the infrared spectra were produced, in no case was a feature observed that could be associated with the superconducting energy gap. These results all but rule out ''clean limit'' explanations for the absence of the spectroscopic gap in this material, and provide evidence that the superconductivity in Bi2Sr2CaCu2O8 is gapless.",

author = "D. Mandrus and Martin, \{Michael C.\} and C. Kendziora and D. Koller and L. Forro and L. Mihaly",

year = "1993",

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pages = "2629--2632",

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T1 - No far-infrared-spectroscopic gap in clean and dirty high-Tc superconductors

AU - Mandrus, D.

AU - Martin, Michael C.

AU - Kendziora, C.

AU - Koller, D.

AU - Forro, L.

AU - Mihaly, L.

PY - 1993

Y1 - 1993

N2 - We report far-infrared transmission measurements on single crystal samples derived from Bi2Sr2CaCu2O8. The impurity scattering rate of the samples was varied by electron-beam irradiation, 50 MeV O+616 ion irradiation, heat treatment in vacuum, and Y doping. Although substantial changes in the infrared spectra were produced, in no case was a feature observed that could be associated with the superconducting energy gap. These results all but rule out ''clean limit'' explanations for the absence of the spectroscopic gap in this material, and provide evidence that the superconductivity in Bi2Sr2CaCu2O8 is gapless.

AB - We report far-infrared transmission measurements on single crystal samples derived from Bi2Sr2CaCu2O8. The impurity scattering rate of the samples was varied by electron-beam irradiation, 50 MeV O+616 ion irradiation, heat treatment in vacuum, and Y doping. Although substantial changes in the infrared spectra were produced, in no case was a feature observed that could be associated with the superconducting energy gap. These results all but rule out ''clean limit'' explanations for the absence of the spectroscopic gap in this material, and provide evidence that the superconductivity in Bi2Sr2CaCu2O8 is gapless.

UR - https://www.scopus.com/pages/publications/0347717386

U2 - 10.1103/PhysRevLett.70.2629

DO - 10.1103/PhysRevLett.70.2629

M3 - Article

AN - SCOPUS:0347717386

SN - 0031-9007

VL - 70

SP - 2629

EP - 2632

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

ER -

No far-infrared-spectroscopic gap in clean and dirty high-Tc superconductors

Abstract

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