Quantum oscillations in the heavy-fermion compound YbPtBi
Abstract
We present quantum oscillations observed in the heavy-fermion compound YbPtBi in magnetic fields far beyond its field-tuned, quantum critical point. Quantum oscillations are observed in magnetic fields as low as 60 kOe at 60 mK and up to temperatures as high as 3 K, which confirms the very high quality of the samples as well as the small effective mass of the conduction carriers far from the quantum critical point. Although the electronic specific heat coefficient of YbPtBi reaches ~7.4 J/molK2 in zero field, which is one of the highest effective mass values among heavy-fermion systems, we suppress it quickly by an applied magnetic field. The quantum oscillations were used to extract the quasiparticle effective masses of the order of the bare electron mass, which is consistent with the behavior observed in specific heat measurements. Furthermore, such small effective masses at high fields can be understood by considering the suppression of Kondo screening.
- Authors:
-
- Ames Lab., Ames, IA (United States); Simon Fraser Univ., Burnaby, BC (Canada)
- Ames Lab., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1227384
- Alternate Identifier(s):
- OSTI ID: 1212328
- Report Number(s):
- IS-J-8784
Journal ID: ISSN 1098-0121; PRBMDO
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 8; 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
Mun, E., Bud'ko, S. L., Lee, Y., Martin, C., Tanatar, M. A., Prozorov, R., and Canfield, P. C. Quantum oscillations in the heavy-fermion compound YbPtBi. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.92.085135.
Mun, E., Bud'ko, S. L., Lee, Y., Martin, C., Tanatar, M. A., Prozorov, R., & Canfield, P. C. Quantum oscillations in the heavy-fermion compound YbPtBi. United States. https://doi.org/10.1103/PhysRevB.92.085135
Mun, E., Bud'ko, S. L., Lee, Y., Martin, C., Tanatar, M. A., Prozorov, R., and Canfield, P. C. Sat .
"Quantum oscillations in the heavy-fermion compound YbPtBi". United States. https://doi.org/10.1103/PhysRevB.92.085135. https://www.osti.gov/servlets/purl/1227384.
@article{osti_1227384,
title = {Quantum oscillations in the heavy-fermion compound YbPtBi},
author = {Mun, E. and Bud'ko, S. L. and Lee, Y. and Martin, C. and Tanatar, M. A. and Prozorov, R. and Canfield, P. C.},
abstractNote = {We present quantum oscillations observed in the heavy-fermion compound YbPtBi in magnetic fields far beyond its field-tuned, quantum critical point. Quantum oscillations are observed in magnetic fields as low as 60 kOe at 60 mK and up to temperatures as high as 3 K, which confirms the very high quality of the samples as well as the small effective mass of the conduction carriers far from the quantum critical point. Although the electronic specific heat coefficient of YbPtBi reaches ~7.4 J/molK2 in zero field, which is one of the highest effective mass values among heavy-fermion systems, we suppress it quickly by an applied magnetic field. The quantum oscillations were used to extract the quasiparticle effective masses of the order of the bare electron mass, which is consistent with the behavior observed in specific heat measurements. Furthermore, such small effective masses at high fields can be understood by considering the suppression of Kondo screening.},
doi = {10.1103/PhysRevB.92.085135},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 8,
volume = 92,
place = {United States},
year = {Sat Aug 01 00:00:00 EDT 2015},
month = {Sat Aug 01 00:00:00 EDT 2015}
}
Web of Science
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