Low temperature transport and thermodynamic properties of the Zintl compound Yb11AlSb9: A new Kondo lattice semiconductor

Author(s)

Magnavita, E. T. ^[1] ; Rettori, C. ^{[2, 1]} ; Osorio-Guillen, J. M. ^[3] ; Ferreira, F. F. ^[1] ; Mendonca-Ferreira, L. ^[1] ; Avila, M. A. ^[1] ; Ribeiro, R. A. ^[1]

Affiliation

^[1] Univ Fed ABC UFABC, CCNH, BR-09210580 Santo Andre, SP - Brazil

^[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

^[3] Univ Antioquia UdeA, Inst Fis, Calle 70 52-21, Medellin - Colombia

• Document type: Journal article
• Source: Journal of Alloys and Compounds; v. 669, p. 60-65, JUN 5 2016.
• Web of Science Citations: 2

Abstract

A thorough transport and thermodynamic investigation of flux-grown single crystals of the ternary Zintl phase Yb-11 AlSb9, combined with first-principles density functional theory calculations, shows that this compound is a metal above T approximate to 100 K and a semiconductor with small hybridization gap at low-T. The general behavior resembles those of Kondo lattice semiconductors, although some of the measured properties are strongly sample dependent, as often seen in hybridized f-electron materials. We thus suggest that Yb-11 AlSb9 can be considered as a new Yb-based Kondo lattice semiconductor joining the family of strongly correlated electron systems. (C) 2016 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 08/10537-3 - Study of crystalline pharmaceuticals polymorphs by X-ray powder diffraction and the Rietveld method
• Grantee: Fabio Furlan Ferreira
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 12/17562-9 - Preparation of oriented single crystals for studies on electronic, magnetic and thermal anisotropies
• Grantee: Marcos de Abreu Avila
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/19924-2 - Study and development of advanced novel materials: electronic, magnetic and nanostructured: an interdisciplinary approach
• Grantee: Carlos Rettori
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 11/23795-3 - Looking for new and better thermoelectrics
• Grantee: Raquel de Almeida Ribeiro
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/09813-9 - Synthesis and characterization of new thermoelectrial materials
• Grantee: Elio Thizay Magnavita Oliveira
• Support Opportunities: Scholarships in Brazil - Doctorate