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Title: Transport properties of Ag_{5}Pb_{2}O_{6}: A three-dimensional electron-gas-like system with low carrier density
Authors: Yonezawa, Shingo  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-7476-3604 (unconfirmed)
Maeno, Yoshiteru  KAKEN_id
Author's alias: 米澤, 進吾
Issue Date: 27-Nov-2013
Publisher: American Physical Society
Journal title: Physical Review B
Volume: 88
Issue: 20
Thesis number: 205143
Abstract: We report normal-state transport properties of the single-crystalline samples of the silver-lead oxide superconductor Ag_{5}Pb_{2}O_{6}, including the electrical resistivity, magnetoresistance, and Hall coefficient. From the Hall coefficient measurement, we confirmed that the carrier density of this oxide is as low as 5×10^{21}cm^{−3}, one order of magnitude smaller than that for ordinary alkali metals and noble metals. The magnetoresistance behavior is well characterized by the axial symmetry of the Fermi surface and by a single relaxation time. The T^2 term of the resistivity is scaled with the specific-heat coefficient, based on the recent theory for the electron-electron scattering. The present results provide evidence thatAg_{5}Pb_{2}O_{6} is a low-carrier-density three-dimensional electron-gas-like system with enhanced electron-electron scatterings.
Rights: © 2013 American Physical Society
URI: http://hdl.handle.net/2433/180090
DOI(Published Version): 10.1103/PhysRevB.88.205143
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