Spin scattering mechanism as the origin of the T-linear resistivity in the Bi2201 system

Xu Gaojie, Mao Zhiqiang, Wu Wenbin, Zhang Yuheng

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Samples of Bi2201 single crystals with various carrier concentrations from the overdoped to the underdoped region are obtained. The normal-state resistivity and thermoelectric power (TEP) for these crystals are measured. The resistivity measurement shows that a MI transition takes place with decreasing oxygen content by heat treatment. An interesting phenomenon in the ρ-T curves is that the resistivity for the sample treated under low oxygen partial pressure deviates downward from T-linearity at 160 K. The corresponding anomaly in TEP has also been observed, i.e., the TEP exhibits a strong enhancement at 160 K, which is suggested to be associated with the opening of a spin gap. The scattering of spin fluctuation as the origin of the T-linear resistivity in the Bi2201 system is proposed and discussed in this paper.

Original languageEnglish (US)
Pages (from-to)555-558
Number of pages4
JournalJournal of Superconductivity
Volume10
Issue number5
DOIs
StatePublished - Oct 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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