Temperature and doping dependence of the Bi2.1Sr1.9CaCu2O8+δ pseudogap and superconducting gap

Azusa Matsuda, Satoshi Sugita, Takao Watanabe

Research output: Contribution to journalArticle

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Abstract

The temperature and doping dependence of Bi2.1Sr1.9CaCu2O8+δ vacuum tunneling spectra was measured. The tunneling spectra show a clear gaplike feature for almost all the measured temperatures (10-300 K) and doping levels [overdoped (Tc∼80 K) to underdoped (Tc∼80 K), via optimum-doped (Tc∼90 K)]. The superconducting gap structure below Tc develops into a pseudogap above Tc. The model analysis based on the BCS-type density of states showed a sudden increase in the gap value and inelastic scattering rate at Tc.

Original languageEnglish
Pages (from-to)1377-1381
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number2
Publication statusPublished - 1999
Externally publishedYes

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Doping (additives)
temperature dependence
Inelastic scattering
inelastic scattering
Vacuum
Temperature
vacuum
scattering
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Temperature and doping dependence of the Bi2.1Sr1.9CaCu2O8+δ pseudogap and superconducting gap. / Matsuda, Azusa; Sugita, Satoshi; Watanabe, Takao.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 2, 1999, p. 1377-1381.

Research output: Contribution to journalArticle

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