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Successive phase transitions and phase diagrams of the quasi-two-dimensional triangular antiferromagnet Rb4Mn(MoO4)3
Rieko Ishii, Shu Tanaka, Keisuke Onuma +9
Comprehensive experimental studies by magnetic, thermal and neutron measurements have clarified that Rb4Mn(MoO4)3 is a model system of a quasi-2D triangular Heisenberg antiferromag…
Evidence of superconductivity on the border of quasi-2D ferromagnetism in Ca2RuO4 at high pressure
Patricia L. Alireza, Fumihiko Nakamura, Swee K. Goh +6
The layered perovskite Ca2RuO4 is a spin-one Mott insulator at ambient pressure and exhibits metallic ferromagnetism at least up to ~ 80 kbar with a maximum Curie temperature of 28…
Detection of Individual Vortices in Micron-Size Sr2RuO4 Rings by Phase-Locked Cantilever Magnetometry
Joonho Jang, Raffi Budakian, Yoshiteru Maeno
We describe a feedback-based dynamic cantilever magnetometry technique capable of achieving high magnetic moment sensitivity with low applied fields. Using this technique, we have…
Suppression of the Mass Enhancement in CaCu3Ru4O12
Soutarou Tanaka, Hiroshi Takatsu, Shingo Yonezawa +1
We have investigated heavy-fermion behavior of the transition-metal oxides ACu3Ru4O12 (A = Na, Ca, La, and their mixtures). It has been known that CaCu3Ru4O12 exhibits Kondo-like b…
Large Enhancement of 3-K Phase Superconductivity in the Sr2RuO4-Ru Eutectic System by Uniaxial Pressure
Shunichiro Kittaka, Hiroshi Yaguchi, Yoshiteru Maeno
While the superconducting transition temperature Tc of Sr2RuO4 is 1.5 K, its onset Tc is enhanced as high as 3 K in the Sr2RuO4-Ru eutectic system, which is often referred to as th…
Angular dependence of the upper critical field of Sr2RuO4
S. Kittaka, T. Nakamura, Y. Aono +3
One of the remaining issues concerning the spin-triplet superconductivity of Sr2RuO4 is the strong limit of the in-plane upper critical field Hc2 at low temperatures. In this study…