
The Library
Data for Pressure-induced shift of effective Ce valence, Fermi energy and phase boundaries in CeOs4Sb12
Tools
Gotze, Kathrin, Pearce, Matthew J., Coak, Matthew John, Goddard, Paul, Grockowiak, Audrey, Coniglio, William, Tozer, Stanley, Graf, David, Maple, M Brian, Ho, Pei-Chun, Brown, Matthew and Singleton, John (2022) Data for Pressure-induced shift of effective Ce valence, Fermi energy and phase boundaries in CeOs4Sb12. [Dataset]
![]() |
Plain Text (Readme file)
readme.txt - Published Version Available under License Creative Commons Attribution 4.0. Download (6Kb) |
![]() |
Archive (ZIP) (Dataset)
Data COS pressure.zip - Published Version Available under License Creative Commons Attribution 4.0. Download (4023Kb) |
Official URL: http://wrap.warwick.ac.uk/164216/
Abstract
CeOs4Sb12, a member of the skutterudite family, has an unusual semimetallic low-temperature L-phase that inhabits a wedge-like area of the field H - temperature T phase diagram. We have conducted measurements of electrical transport and megahertz conductivity on CeOs4Sb12 single crystals under pressures of up to 3 GPa and in high magnetic fields of up to 41 T to investigate the influence of pressure on the different H-T phase boundaries. While the high-temperature valence transition between the metallic H-phase and the L-phase is shifted to higher T by pressures of the order of 1 GPa, we observed only a marginal suppression of the S-phase that is found below 1 K for pressures of up to 1.91 GPa. High-field quantum oscillations have been observed for pressures up to 3.0 GPa and the Fermi surface of the high-field side of the H-phase is found to show a surprising decrease in size with increasing pressure, implying a change in electronic structure rather than a mere contraction of lattice parameters. We evaluate the field-dependence of the effective masses for different pressures and also reflect on the sample dependence of some of the properties of CeOs4Sb12 which appears to be limited to the low-field region.
Item Type: | Dataset | |||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
|||||||||||||||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Cerium, Valence fluctuations, Skutterudite, Semimetals | |||||||||||||||||||||||||||||||||
Publisher: | University of Warwick, Department of Physics | |||||||||||||||||||||||||||||||||
Official Date: | 26 April 2022 | |||||||||||||||||||||||||||||||||
Dates: |
|
|||||||||||||||||||||||||||||||||
Status: | Not Peer Reviewed | |||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||
Media of Output (format): | .DAT | |||||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||||||||
Copyright Holders: | University of Warwick | |||||||||||||||||||||||||||||||||
Description: | Files represent: |
|||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 5 April 2022 | |||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 26 April 2022 | |||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
|
|||||||||||||||||||||||||||||||||
Related URLs: | ||||||||||||||||||||||||||||||||||
Contributors: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
![]() |
View Item |
Downloads
Downloads per month over past year