Superconducting gap and pseudogap
نویسندگان
چکیده
منابع مشابه
Fermi surface dichotomy of the superconducting gap and pseudogap in underdoped pnictides.
High-temperature superconductivity in iron-arsenic materials (pnictides) near an antiferromagnetic phase raises the possibility of spin-fluctuation-mediated pairing. However, the interplay between antiferromagnetic fluctuations and superconductivity remains unclear in the underdoped regime, which is closer to the antiferromagnetic phase. Here we report that the superconducting gap of underdoped...
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Relationships between the superconducting gap, pseudogap and transition temperature in high-T c superconductors Abstract The crossover from superconducting gap to pseudogap is considered. We show that the superconductivity is destroyed at the temperature T c , with the superconducting gap being smoothly transformed into the pseudogap. Relations, which are of general interest, between the maximu...
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We describe the spectral properties of underdoped cuprates as resulting from a momentumdependent pseudogap in the normal state spectrum. Such a model accounts, within a BCS approach, for the doping dependence of the critical temperature and for the two-parameter leading-edge shift observed in the cuprates. By introducing a phenomenological temperature dependence of the pseudogap, which finds a ...
متن کامل6 O ct 2 00 1 Relationships Between the Superconducting Gap , Pseudogap and Transition Temperature in High - T c Cuprates
The crossover from superconducting gap to pseudogap is considered. We show that the superconductivity is destroyed at the temperature T c , with the superconducting gap being smoothly transformed into the pseudogap. Relations, which are of general interest, between the maximum values of the gap ∆ 1 , T c and T * are established. We presents arguments that T * as a function of the doping level x...
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The presence of a normal state spectral (pseudo) gap at the superconducting transition temperature in the underdoped cuprates has important implications for the associated superconducting phase. We argue that this normal state pseudogap derives from pairing fluctuations, which necessarily persist below and which have important implications on the superconducting state. Our Greens function appro...
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ژورنال
عنوان ژورنال: Low Temperature Physics
سال: 2006
ISSN: 1063-777X,1090-6517
DOI: 10.1063/1.2215372