Chemical potential shift in overdoped and underdoped La2-xSrxCuO4

A. Ino, Takashi Mizokawa, A. Fujimori, K. Tamasaku, H. Eisaki, S. Uchida, T. Kimura, T. Sasagawa, K. Kishio

Research output: Contribution to journalArticle

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Abstract

The downward shift of the electron chemical potential μ with hole doping in La2-xSrxCuO4 has been deduced from the shifts of photoemission and inverse-photoemission spectra. While the shift is large (∼1.5 eV/hole) in overdoped samples, it is suppressed (<0.2 eV/hole) in underdoped samples, implying a divergent charge susceptibility near the metal-insulator transition. In the overdoped regime, the μ and the electronic specific heat coefficient γ are consistently explained within Fermi-liquid theory, whereas the same analysis gives unphysical results in the underdoped regime, indicating the breakdown of the Fermi-liquid picture in the underdoped regime.

Original languageEnglish
Pages (from-to)2101-2104
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number11
Publication statusPublished - 1997
Externally publishedYes

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Fermi liquids
shift
photoelectric emission
breakdown
insulators
specific heat
magnetic permeability
coefficients
electronics
metals
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ino, A., Mizokawa, T., Fujimori, A., Tamasaku, K., Eisaki, H., Uchida, S., ... Kishio, K. (1997). Chemical potential shift in overdoped and underdoped La2-xSrxCuO4. Physical Review Letters, 79(11), 2101-2104.

Chemical potential shift in overdoped and underdoped La2-xSrxCuO4. / Ino, A.; Mizokawa, Takashi; Fujimori, A.; Tamasaku, K.; Eisaki, H.; Uchida, S.; Kimura, T.; Sasagawa, T.; Kishio, K.

In: Physical Review Letters, Vol. 79, No. 11, 1997, p. 2101-2104.

Research output: Contribution to journalArticle

Ino, A, Mizokawa, T, Fujimori, A, Tamasaku, K, Eisaki, H, Uchida, S, Kimura, T, Sasagawa, T & Kishio, K 1997, 'Chemical potential shift in overdoped and underdoped La2-xSrxCuO4', Physical Review Letters, vol. 79, no. 11, pp. 2101-2104.
Ino A, Mizokawa T, Fujimori A, Tamasaku K, Eisaki H, Uchida S et al. Chemical potential shift in overdoped and underdoped La2-xSrxCuO4. Physical Review Letters. 1997;79(11):2101-2104.
Ino, A. ; Mizokawa, Takashi ; Fujimori, A. ; Tamasaku, K. ; Eisaki, H. ; Uchida, S. ; Kimura, T. ; Sasagawa, T. ; Kishio, K. / Chemical potential shift in overdoped and underdoped La2-xSrxCuO4. In: Physical Review Letters. 1997 ; Vol. 79, No. 11. pp. 2101-2104.
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