Remarks on the Order Parameter of the Cuprate High Temperature Superconductors
Stefan Huefner, Frank Mueller
TL;DR
This paper reviews various spectroscopic data on cuprate high-temperature superconductors to identify their order parameter, finding consistent excitation energies across different techniques proportional to the transition temperature.
Contribution
It consolidates diverse spectroscopic evidence to confirm the excitation energy as the order parameter in cuprate superconductors.
Findings
Consistent excitation energy of 40 meV across techniques
Excitation energy proportional to transition temperature
Identification of the order parameter in cuprates
Abstract
A large body of spectroscopic data on the cuprate high temperature superconductors (CHTSC) is reviewed in order to determine their order parameter. ASJ, INS, B2g Raman spectra, optical data, NIS "dips", ARPES "dips" and ARPES "kinks" all show the same excitation energy (40 meV for OP95 systems), proportional to the superconducting transition temperature, and it is therefore identified with the order parameter.
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