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

Azusa Matsuda; Satoshi Sugita; Takao Watanabe

doi:10.1103/PhysRevB.60.1377

Temperature and doping dependence of the Bi_2.1Sr_1.9CaCu₂O_8+δ pseudogap and superconducting gap

Azusa Matsuda, Satoshi Sugita, Takao Watanabe

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

77 Citations (Scopus)

Abstract

The temperature and doping dependence of Bi_2.1Sr_1.9CaCu₂O_8+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 (T_c 80 K) to underdoped (T_c 80 K), via optimum-doped (T_c 90 K)]. The superconducting gap structure below T_c develops into a pseudogap above T_c. The model analysis based on the BCS-type density of states showed a sudden increase in the gap value and inelastic scattering rate at T_c.

Original language	English
Pages (from-to)	1377-1381
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.60.1377
Publication status	Published - 1999
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.60.1377

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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.",

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AU - Sugita, Satoshi

AU - Watanabe, Takao

PY - 1999

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N2 - 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.

AB - 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.

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Temperature and doping dependence of the Bi_2.1Sr_1.9CaCu₂O_8+δ pseudogap and superconducting gap

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