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Data for Fermi-surface topologies and low-temperature phases of the filled skutterudite compounds CeOs4Sb12 and NdOs4Sb12

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Ho, Pei Chun, Singleton, John, Goddard, Paul, Balakirev, F. F., Shalinee , Chikara, Yanagisawa, Tatsuya, Maple, M. Brian, Shrekenhamer, David B., Lee, Xia and Thomas, Avraham T. (2016) Data for Fermi-surface topologies and low-temperature phases of the filled skutterudite compounds CeOs4Sb12 and NdOs4Sb12. [Dataset]

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Abstract

MHz conductivity, torque magnetometer and magnetization measurements are reported on single crystals of CeOs4Sb12 and NdOs4Sb12 using temperatures down to 0.5 K and magnetic fields of up to 60 tesla. The field-orientation dependence of the de Haas-van Alphen and Shubnikov-de Haas oscillations is deduced by rotating the samples about the [010] and [0¯11] directions. The results indicate that NdOs4Sb12 has a similar Fermi surface topology to that of the unusual superconductor PrOs4Sb12, but with significantly smaller effective masses, supporting the importance of local phonon modes in contributing to the low-temperature heat capacity of NdOs4Sb12. By contrast, CeOs4Sb12 undergoes a field-induced transition from an unusual semimetal into a high-field, hightemperature state characterized by a single, almost spherical Fermi-surface section. The behavior of the phase boundary and comparisons with models of the bandstructure lead us to propose that the field-induced phase transition in CeOs4Sb12 is similar in origin to the well-known α − γ transition in Ce and its alloys.

Item Type: Dataset
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Type of Data: Plain text .dat and readme.txt contained in .zip
Library of Congress Subject Headings (LCSH): Skutterudite, Fermi surfaces, Superconductors, Semimetals
Publisher: University of Warwick, Physics Department
Official Date: 16 December 2016
Dates:
DateEvent
16 December 2016Accepted
Status: Not Peer Reviewed
Publication Status: Published
Media of Output (format): .txt .dat
Access rights to Published version: Open Access (Creative Commons)
Description:

Data from SQUID measurements of magnetic susceptibility vs temperature of CeOs4Sb12

Data was taken at the following applied fields (oersteds)

500
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
20000
30000
40000
50000
60000
70000

mass of sample = 15.3 mg

These data were used in conjunction with pulsed-field measurements to construct Figure 5(c)

RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
DMR-1506677National Science Foundationhttp://dx.doi.org/10.13039/100000001
DMR-1206553National Science Foundationhttp://dx.doi.org/10.13039/100000001
DMR-1157490National Science Foundationhttp://dx.doi.org/10.13039/100000001
DEFG02-04ER46105U.S. Department of Energyhttp://dx.doi.org/10.13039/100000015
Science in 100 TU.S. Department of Energyhttp://dx.doi.org/10.13039/100000015
26400342 Japan Society for the Promotion of Sciencehttp://dx.doi.org/10.13039/501100001691
15K05882 Japan Society for the Promotion of Sciencehttp://dx.doi.org/10.13039/501100001691
15K21732Japan Society for the Promotion of Sciencehttp://dx.doi.org/10.13039/501100001691
UNSPECIFIED[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDFlorida. Department of Statehttp://viaf.org/viaf/139521689
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