Possible mechanism of eemiconductive temperature dependence of c-axis resistivity in the normal state of high-Tc superconductors

Renormalization effect of fermi surface by antiferromagnetic spin fluctuations

Masakazu Terao, Yoji Ohashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We propose a mechanism of the semiconductive temperature dependence of the c-axis resistivity (ρc) in the normal state of high-Tc superconductors. We show that antiferromagnetic spin fluctuations in the CuO2-layer affect the temperature dependence of the Fermi surface shape and that they decrease (increase) the conductive carrier density (band mass) in the c-direction. Thus, when this effect dominates the temperature dependence of ρc, ρc increases at low temperatures. On the other hand, in the in-plane direction, the AF spin fluctuations do not affect the carrier density while they decrease the so-called k-mass at low temperatures. As a consequence, taking into account the damping rate which is caused by the electron-electron interaction, we obtain the in-plane resistivity (ρab) which decreases with decreasing temperature. Thus, the present mechanism can explain the semiconductive temperature dependence of ρc satisfying the metallic behavior of ρab.

Original languageEnglish
Pages (from-to)233-240
Number of pages8
JournalJournal of the Physical Society of Japan
Volume70
Issue number1
DOIs
Publication statusPublished - 2001 Jan
Externally publishedYes

Fingerprint

Fermi surfaces
temperature dependence
electrical resistivity
electron scattering
damping
electrons
temperature

Keywords

  • Antiferromagnetic spin fluctuations
  • High-T
  • Renormalization effect of Fermi surface
  • Resistivity
  • Superconductors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Possible mechanism of eemiconductive temperature dependence of c-axis resistivity in the normal state of high-Tc superconductors: Renormalization effect of fermi surface by antiferromagnetic spin fluctuations",
abstract = "We propose a mechanism of the semiconductive temperature dependence of the c-axis resistivity (ρc) in the normal state of high-Tc superconductors. We show that antiferromagnetic spin fluctuations in the CuO2-layer affect the temperature dependence of the Fermi surface shape and that they decrease (increase) the conductive carrier density (band mass) in the c-direction. Thus, when this effect dominates the temperature dependence of ρc, ρc increases at low temperatures. On the other hand, in the in-plane direction, the AF spin fluctuations do not affect the carrier density while they decrease the so-called k-mass at low temperatures. As a consequence, taking into account the damping rate which is caused by the electron-electron interaction, we obtain the in-plane resistivity (ρab) which decreases with decreasing temperature. Thus, the present mechanism can explain the semiconductive temperature dependence of ρc satisfying the metallic behavior of ρab.",
keywords = "Antiferromagnetic spin fluctuations, High-T, Renormalization effect of Fermi surface, Resistivity, Superconductors",
author = "Masakazu Terao and Yoji Ohashi",
year = "2001",
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pages = "233--240",
journal = "Journal of the Physical Society of Japan",
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TY - JOUR

T1 - Possible mechanism of eemiconductive temperature dependence of c-axis resistivity in the normal state of high-Tc superconductors

T2 - Renormalization effect of fermi surface by antiferromagnetic spin fluctuations

AU - Terao, Masakazu

AU - Ohashi, Yoji

PY - 2001/1

Y1 - 2001/1

N2 - We propose a mechanism of the semiconductive temperature dependence of the c-axis resistivity (ρc) in the normal state of high-Tc superconductors. We show that antiferromagnetic spin fluctuations in the CuO2-layer affect the temperature dependence of the Fermi surface shape and that they decrease (increase) the conductive carrier density (band mass) in the c-direction. Thus, when this effect dominates the temperature dependence of ρc, ρc increases at low temperatures. On the other hand, in the in-plane direction, the AF spin fluctuations do not affect the carrier density while they decrease the so-called k-mass at low temperatures. As a consequence, taking into account the damping rate which is caused by the electron-electron interaction, we obtain the in-plane resistivity (ρab) which decreases with decreasing temperature. Thus, the present mechanism can explain the semiconductive temperature dependence of ρc satisfying the metallic behavior of ρab.

AB - We propose a mechanism of the semiconductive temperature dependence of the c-axis resistivity (ρc) in the normal state of high-Tc superconductors. We show that antiferromagnetic spin fluctuations in the CuO2-layer affect the temperature dependence of the Fermi surface shape and that they decrease (increase) the conductive carrier density (band mass) in the c-direction. Thus, when this effect dominates the temperature dependence of ρc, ρc increases at low temperatures. On the other hand, in the in-plane direction, the AF spin fluctuations do not affect the carrier density while they decrease the so-called k-mass at low temperatures. As a consequence, taking into account the damping rate which is caused by the electron-electron interaction, we obtain the in-plane resistivity (ρab) which decreases with decreasing temperature. Thus, the present mechanism can explain the semiconductive temperature dependence of ρc satisfying the metallic behavior of ρab.

KW - Antiferromagnetic spin fluctuations

KW - High-T

KW - Renormalization effect of Fermi surface

KW - Resistivity

KW - Superconductors

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