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Divalent ion substitution effect on Yb-site in Kondo insulator YbB12
- Source :
- AIP Advances, Vol 8, Iss 10, Pp 101329-101329-3 (2018)
- Publication Year :
- 2018
- Publisher :
- AIP Publishing LLC, 2018.
-
Abstract
- YbB12 has been investigated energetically as a typical Kondo insulator. To study detailed formation mechanism of Kondo energy gap, we have investigated transport and magnetic properties of Yb1-xR3+xB12 (R3+ = non-magnetic trivalent ions). Recently, we have recently succeeded in substitution of Ca2+ for Yb site in YbB12 by high-pressure synthesis. In Ca- and Lu-substituted alloys both of magnetic susceptibility and specific heat C/T at low temperatures, remarkably show larger increase than those of powdered YbB12. These increases are due to giant increase of density of state in an in-gap state.
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 8
- Issue :
- 10
- Database :
- Directory of Open Access Journals
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.20ae1071e7d245b999098835bc233775
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/1.5043111