The thermopower of superconducting NaxCoO2·γH2O; evidence for conduction in a very narrow band

B. Fisher; K. B. Chashka; L. Patlagan; A. Kanigel; A. Knizhnik; G. Bazalitsky; G. M. Reisner

doi:10.1088/0953-8984/15/37/L03

The thermopower of superconducting Na_xCoO₂·γH₂O; evidence for conduction in a very narrow band

B. Fisher
, K. B. Chashka
, L. Patlagan
, A. Kanigel
, A. Knizhnik
, G. Bazalitsky
, G. M. Reisner

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

Abstract

The absolute thermopower (S) of superconducting Na_xCoO₂·γH₂O is p-type. It increases superlinearly with temperature up to ∼50 K; at higher temperatures its rate of change decreases and saturation at S ≈ 40 μV K^-1 is observed above 150 K. S(T) for Na_xCoO₂·γH₂O resembles that of anhydrous Na_xCoO₂ (x ≈ 0.7), but is lower by a factor of ∼2 and its saturation is more pronounced. These results are consistent with electronic transport by strongly correlated electrons in a very narrow band.

Original language	English
Pages (from-to)	L571-L577
Journal	Journal of Physics Condensed Matter
Volume	15
Issue number	37
DOIs	https://doi.org/10.1088/0953-8984/15/37/L03
State	Published - 24 Sep 2003

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

Access to Document

10.1088/0953-8984/15/37/L03

Cite this

@article{54ed0359326a414eb1ee00a620f6bfae,

title = "The thermopower of superconducting NaxCoO2·γH2O; evidence for conduction in a very narrow band",

abstract = "The absolute thermopower (S) of superconducting NaxCoO2·γH2O is p-type. It increases superlinearly with temperature up to ∼50 K; at higher temperatures its rate of change decreases and saturation at S ≈ 40 μV K-1 is observed above 150 K. S(T) for NaxCoO2·γH2O resembles that of anhydrous NaxCoO2 (x ≈ 0.7), but is lower by a factor of ∼2 and its saturation is more pronounced. These results are consistent with electronic transport by strongly correlated electrons in a very narrow band.",

author = "B. Fisher and Chashka, \{K. B.\} and L. Patlagan and A. Kanigel and A. Knizhnik and G. Bazalitsky and Reisner, \{G. M.\}",

year = "2003",

month = sep,

day = "24",

doi = "10.1088/0953-8984/15/37/L03",

language = "אנגלית",

volume = "15",

pages = "L571--L577",

number = "37",

}

TY - JOUR

T1 - The thermopower of superconducting NaxCoO2·γH2O; evidence for conduction in a very narrow band

AU - Fisher, B.

AU - Chashka, K. B.

AU - Patlagan, L.

AU - Kanigel, A.

AU - Knizhnik, A.

AU - Bazalitsky, G.

AU - Reisner, G. M.

PY - 2003/9/24

Y1 - 2003/9/24

N2 - The absolute thermopower (S) of superconducting NaxCoO2·γH2O is p-type. It increases superlinearly with temperature up to ∼50 K; at higher temperatures its rate of change decreases and saturation at S ≈ 40 μV K-1 is observed above 150 K. S(T) for NaxCoO2·γH2O resembles that of anhydrous NaxCoO2 (x ≈ 0.7), but is lower by a factor of ∼2 and its saturation is more pronounced. These results are consistent with electronic transport by strongly correlated electrons in a very narrow band.

AB - The absolute thermopower (S) of superconducting NaxCoO2·γH2O is p-type. It increases superlinearly with temperature up to ∼50 K; at higher temperatures its rate of change decreases and saturation at S ≈ 40 μV K-1 is observed above 150 K. S(T) for NaxCoO2·γH2O resembles that of anhydrous NaxCoO2 (x ≈ 0.7), but is lower by a factor of ∼2 and its saturation is more pronounced. These results are consistent with electronic transport by strongly correlated electrons in a very narrow band.

UR - https://www.scopus.com/pages/publications/0141732186

U2 - 10.1088/0953-8984/15/37/L03

DO - 10.1088/0953-8984/15/37/L03

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.letter???

AN - SCOPUS:0141732186

SN - 0953-8984

VL - 15

SP - L571-L577

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 37

ER -

The thermopower of superconducting Na_xCoO₂·γH₂O; evidence for conduction in a very narrow band

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this