Non-magnetic element substitution effect in Kondo insulator YbB12 and exotic surface effect in this alloy system
Source abstract
Abstract
Kondo temperature TK’s for Kondo insulator alloys Yb1-xRxB12 (R = Y, Lu, Sc and Zr) show drastic variation as every x increase. It is found that YbB12 in a virtual gap-less state would have a peak at about 25 K in magnetic susceptibility χ(T) from analysis of χ(T) of all these alloys. Up-turns shown in χ(T) below 20 K grow as development of an energy gap ΔE. Those behaviors may be related to the second-gap development within the in-gap state showing metallic behaviors.
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Research context
OpenAlex topics: Rare-earth and actinide compounds · Physics of Superconductivity and Magnetism · Topological Materials and Phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Science, Ibaraki University 1 , Mito 310-8512, Japan
Institute of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University 2 , Mito 310-8512, Japan
Institute for Solid State Physics, University of Tokyo 3 , Kashiwa 277-8581, Japan
Funding
Japan Society for the Promotion of Science
References (11)
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