189 citations · 529 across the 9 of their papers we have counts for
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Superconductivity in undoped T'-RE2CuO4 with Tc over 30 K
O. Matsumoto, A. Utsuki, A. Tsukada +3
In this article, we report the superconductivity in T'-RE2CuO4 (RE = Pr, Nd, Sm, Eu, and Gd), which have been for a long time believed as a Mott insulator. Our discovery was achiev…
Charge transfer gap for T'-RE2CuO4 and T-La2CuO4 as estimated from Madelung potential calculations
A. Tsukada, H. Shibata, M. Noda +2
T'-RE2CuO4 (RE: rare-earth element), after appropriate "reduction", has fairly high conductivity and also exhibits clear Fermi edge in photoemission spectroscopy. To clarify the or…
Doping of Ce in T-La2CuO4: Rigorous test for electron-hole symmetry for high-Tc superconductivity
A. Tsukada, H. Yamamoto, M. Naito
We report that Ce doping was achieved in La2CuO4 with the K2NiF4 (T) structure for the first time by molecular beam epitaxy. A synthesis temperature of as low as ~ 630C and an appr…
Origin of superconducting carriers in "non-doped" T'- (La,RE)2CuO4 (RE = Sm, Eu, Gd, Tb, Lu, and Y) prepared by molecular beam epitaxy
M. Noda, A. Tsukada, H. Yamamoto +1
We have performed a systematic investigation of the variations of the lattice constants with substituent rare-earth element concentration x in the nominally undoped superconductors…
New class of T-prime-structure cuprate superconductors
A. Tsukada, Y. Krockenberger, M. Noda +4
High-temperature superconductivity has been discovered in La2-xBaxCuO4 [1], a compound that derives from the undoped La2CuO4 crystallizing in the perovskite T-structure. In this st…
New superconducting T'-(La3+)2-x(RE3+)xCuO4 with isovalent doping (RE = Sm, Eu, Tb, Lu, and Y)
A. Tsukada, Y. Krockenberger, H. Yamamoto +1
We report the synthesis of new superconducting cuprates T'-La2-xRExCuO4 (RE = Sm, Eu, Tb, Lu, and Y) using molecular beam epitaxy. The new superconductors have no effective dopant,…