Infrared Absorption in High-Tc Superconductors Using the Spin Polaron Formulation

被引：0
作者：
Unofre B. Pili
Danilo M. Yanga
机构：
[1] University of San Carlos,Department of Physics
来源：
Journal of Superconductivity and Novel Magnetism | 2022年 / 35卷
关键词：
Infrared absorption; High-; superconductors; Finite temperature (Matsubara) Green’s function; Conductivity; Energy gap function; Spin polaron formulation;
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摘要：
In this paper optical absorption of high-Tc superconductors in the infrared region is investigated within the framework of the spin polaron theory. The approach uses a representation where holes are spinless fermions while spins are normal bosons. Thus, we explored infrared absorption in high-Tc superconductors at finite temperature in a completely analytical way. This task is done through the use of the Matsubara Green’s function method in the spin polaron formulation. Infrared absorption is then analyzed in terms of the conductivity which is a function of the energy gap and the frequency of the infrared energy. Our main result is consistent with the conductivity of superconductors in the clean limit.
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页码：1883 / 1889
页数：6
相关论文
共 59 条
  • [1] Morales AA(2004)Calculation of entropy and specific heat in the spin polaron formulation at finite temperature J. Supercond. Novel Magn. 17 283-8679
  • [2] Yanga DM(2002)The hole spectral function in the finite temperature Green’s function scheme J. Supercond. Novel Magn. 15 277-342
  • [3] Kurihara S(2001)Application of the spin polaron theory at finite temperature Physica C 364–365 123-12537
  • [4] Morales AA(1998)Large- polaron effects in the infrared spectrum of high- Solid State Commun. 106 5-967
  • [5] Yanga DM(1988) cuprate superconductors Phys. Rev. Lett. 61 1127-undefined
  • [6] Kurihara S(1995)Anomalous disappearance of high- Phys. Rev. B 51 8676-undefined
  • [7] Yanga DM(1996) superconductivity at high hole concentration in metallic La Phys. Rev. B 53 335-undefined
  • [8] Morales AA(1995)Sr Phys. Rev. B 52 12534-undefined
  • [9] Devreese JT(1995)CuO Phys. Rev. Lett. 74 964-undefined
  • [10] Tempere J(1997)Photoemission spectra of Sr Phys. Rev. B 56 3381-undefined
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