NDLI: Pseudogap Behavior in the Electronic Specific Heat of La$_{2−x}$Sr$_{x}$CuO$

Content Provider	SpringerLink
Author	Momo, N. Matsuzaki, T. Nagata, T. Oda, M. Ido, M.
Copyright Year	1999
Abstract	In La214, the electronic specific heat coefficient γ (=C $_{el}$ /T) is gradually suppressed with lowering T below a certain temperature T* (> T $_{c}$ ), where the in-plane resistivity ρ and magnetic susceptibility χ also tend to be suppressed slightly. Temperature T, increasing with lowering x, is in qualitative agreement with the mean field T $_{c}$ (T $_{co}$ ), estimated from the superconducting gap amplitude 2Δ $_{o}$ at T ≪ T $_{c}$ , as the onset temperature T of a pseudogap in Bi2212. The gradual suppression of γ below ∼ T $_{co}$ implies that a pseudogap will also open up below ∼ T $_{co}$ in La214 as in Bi2212. In underdoped samples, whose pseudogap-like behaviors in C $_{el}$(T) become marked, the anomaly of C $_{el}$ around T $_{c}$ is rather different from the BCS expectation.
Starting Page	353
Ending Page	357
Page Count	5
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	117
Issue Number	3-4
e-ISSN	15737357
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	1999-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Characterization and Evaluation Materials Condensed Matter Magnetism, Magnetic Materials
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Atomic and Molecular Physics, and Optics Materials Science

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Pseudogap Behavior in the Electronic Specific Heat of La$_{2−x}$Sr$_{x}$CuO$_{4}$