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Fermi-liquid ground state in n-type copper-oxide superconductor Pr0.91Ce0.09LaCuO4-y | | G.-q. Zheng
; T. Sato
; Y. Kitaoka
; M. Fujita
; K. Yamada
; | | Date: |
19 Nov 2002 | | Journal: | Phys. Rev. Lett. Vol. 90, 197005 (2003) | | Subject: | Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el | | Abstract: | We report nuclear magnetic resonance studies on the low-doped n-type copper-oxide Pr_{0.91}LaCe_{0.09}CuO_{4-y} (T_c=24 K) in the superconducting state and in the normal state uncovered by the application of a strong magnetic field. We find that when the superconductivity is removed, the underlying ground state is the Fermi liquid state. This result is at variance with that inferred from previous thermal conductivity measurement and contrast with that in p-type copper-oxides with a similar doping level where high-T_c superconductivity sets in within the pseudogap phase. The data in the superconducting state are consistent with the line-nodes gap model. | | Source: | arXiv, cond-mat/0211400 | | Services: | Forum | Review | PDF | Favorites | |
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