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dc.titleMetallic state in La-doped YBa 2Cu 3O y thin films with n-type charge carriers
dc.contributor.authorZeng, S.W.
dc.contributor.authorWang, X.
dc.contributor.authorLü, W.M.
dc.contributor.authorHuang, Z.
dc.contributor.authorMotapothula, M.
dc.contributor.authorLiu, Z.Q.
dc.contributor.authorZhao, Y.L.
dc.contributor.authorAnnadi, A.
dc.contributor.authorDhar, S.
dc.contributor.authorMao, H.
dc.contributor.authorChen, W.
dc.contributor.authorVenkatesan, T.
dc.identifier.citationZeng, S.W., Wang, X., Lü, W.M., Huang, Z., Motapothula, M., Liu, Z.Q., Zhao, Y.L., Annadi, A., Dhar, S., Mao, H., Chen, W., Venkatesan, T., Ariando (2012-07-20). Metallic state in La-doped YBa 2Cu 3O y thin films with n-type charge carriers. Physical Review B - Condensed Matter and Materials Physics 86 (4) : -. ScholarBank@NUS Repository.
dc.description.abstractWe report hole and electron doping in La-doped YBa 2Cu 3O y (YBCO) thin films synthesized by the pulsed laser deposition technique and subsequent in situ postannealing in ambient oxygen and vaccum. The n-type samples show a metallic behavior below the Mott limit and a high carrier density of ∼2.8×1021 cm -3 at room temperature (T) at the optimally reduced condition. The in-plane resistivity(ρ ab) of the n-type samples exhibits a quadratic T dependence in the moderate-T range and shows an anomaly at a relatively higher T probably related to pseudogap formation analogous to underdoped Nd 2-xCe xCuO 4 (NCCO). Furthermore, ρ ab(T), T c, and T with minimum resistivity (T min) were investigated in both p and n sides. The present results reveal the n-p asymmetry (symmetry) within the metallic-state region in an underdoped cuprate and suggest the potential toward ambipolar superconductivity in a single YBCO system. © 2012 American Physical Society.
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.sourcetitlePhysical Review B - Condensed Matter and Materials Physics
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