High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt
Abstract
In this study, YbBiPt is a heavy-fermion compound possessing significant short-range antiferromagnetic correlations below a temperature of T*=0.7K, fragile antiferromagnetic order below TN = 0.4K, a Kondo temperature of TK ≈ 1K, and crystalline-electric-field splitting on the order of E/kB = 1 – 10K. Whereas the compound has a face-centered-cubic lattice at ambient temperature, certain experimental data, particularly those from studies aimed at determining its crystalline-electric-field scheme, suggest that the lattice distorts at lower temperature. Here, we present results from high-resolution, high-energy x-ray diffraction experiments which show that, within our experimental resolution of ≈ 6 – 10 × 10–5 Å, no structural phase transition occurs between T = 1.5 and 50 K. In combination with results from dilatometry measurements, we further show that the compound's thermal expansion has a minimum at ≈ 18 K and a region of negative thermal expansion for 9 ≲ T ≲ 18 K. Despite diffraction patterns taken at 1.6 K which indicate that the lattice is face-centered cubic and that the Yb resides on a crystallographic site with cubic point symmetry, we demonstrate that the linear thermal expansion may be modeled using crystalline-electric-field level schemes appropriate for Yb3+ residing on a site with either cubicmore »
- Authors:
-
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
- Occidental College, Los Angeles, CA (United States)
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1235586
- Alternate Identifier(s):
- OSTI ID: 1227534
- Report Number(s):
- IS-J-8891
Journal ID: ISSN 1098-0121; PRBMDO
- Grant/Contract Number:
- AC02-07CH11358; DMR1408598; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 18; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Ueland, B. G., Saunders, S. M., Bud'ko, S. L., Schmiedeshoff, G. M., Canfield, P. C., Kreyssig, A., and Goldman, A. I. High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.92.184111.
Ueland, B. G., Saunders, S. M., Bud'ko, S. L., Schmiedeshoff, G. M., Canfield, P. C., Kreyssig, A., & Goldman, A. I. High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt. United States. https://doi.org/10.1103/PhysRevB.92.184111
Ueland, B. G., Saunders, S. M., Bud'ko, S. L., Schmiedeshoff, G. M., Canfield, P. C., Kreyssig, A., and Goldman, A. I. Mon .
"High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt". United States. https://doi.org/10.1103/PhysRevB.92.184111. https://www.osti.gov/servlets/purl/1235586.
@article{osti_1235586,
title = {High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt},
author = {Ueland, B. G. and Saunders, S. M. and Bud'ko, S. L. and Schmiedeshoff, G. M. and Canfield, P. C. and Kreyssig, A. and Goldman, A. I.},
abstractNote = {In this study, YbBiPt is a heavy-fermion compound possessing significant short-range antiferromagnetic correlations below a temperature of T*=0.7K, fragile antiferromagnetic order below TN = 0.4K, a Kondo temperature of TK ≈ 1K, and crystalline-electric-field splitting on the order of E/kB = 1 – 10K. Whereas the compound has a face-centered-cubic lattice at ambient temperature, certain experimental data, particularly those from studies aimed at determining its crystalline-electric-field scheme, suggest that the lattice distorts at lower temperature. Here, we present results from high-resolution, high-energy x-ray diffraction experiments which show that, within our experimental resolution of ≈ 6 – 10 × 10–5 Å, no structural phase transition occurs between T = 1.5 and 50 K. In combination with results from dilatometry measurements, we further show that the compound's thermal expansion has a minimum at ≈ 18 K and a region of negative thermal expansion for 9 ≲ T ≲ 18 K. Despite diffraction patterns taken at 1.6 K which indicate that the lattice is face-centered cubic and that the Yb resides on a crystallographic site with cubic point symmetry, we demonstrate that the linear thermal expansion may be modeled using crystalline-electric-field level schemes appropriate for Yb3+ residing on a site with either cubic or less than cubic point symmetry.},
doi = {10.1103/PhysRevB.92.184111},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 18,
volume = 92,
place = {United States},
year = {Mon Nov 30 00:00:00 EST 2015},
month = {Mon Nov 30 00:00:00 EST 2015}
}
Web of Science
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