Electron Number-Based Phase Diagram of Pr1-xLaCexCuO4-δ and Possible Absence of Disparity between Electron- and Hole-Doped Cuprate Phase Diagrams

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Title
Electron Number-Based Phase Diagram of Pr1-xLaCexCuO4-δ and Possible Absence of Disparity between Electron- and Hole-Doped Cuprate Phase Diagrams
Author(s)
Song D.; Garam Han; Wonshik Kyung; Jeongjin Seo; Soohyun Cho; Beom Seo Kim; Arita M.; Shimada K.; Namatame H.; Taniguchi M.; Yoshida Y.; Eisaki H.; Park S.R.; Chanyoung Kim
Publication Date
2017-04
Journal
PHYSICAL REVIEW LETTERS, v.118, no.13, pp.137001 -
Publisher
AMER PHYSICAL SOC
Abstract
We performed annealing and angle resolved photoemission spectroscopy studies on electron-doped cuprate Pr1-xLaCexCuO4-δ (PLCCO). It is found that the optimal annealing condition is dependent on the Ce content x. The electron number (n) is estimated from the experimentally obtained Fermi surface volume for x=0.10, 0.15 and 0.18 samples. It clearly shows a significant and annealing dependent deviation from the nominal x. In addition, we observe that the pseudo-gap at hot spots is also closely correlated with n; the pseudogap gradually closes as n increases. We established a new phase diagram of PLCCO as a function of n. Different from the x-based one, the new phase diagram shows similar antiferromagnetic and superconducting phases to those of hole doped ones. Our results raise a possibility for absence of disparity between the phase diagrams of electron- and hole-doped cuprates © 2017 American Physical Society. American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/3433
ISSN
0031-9007
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
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