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Four-probe electrical measurements with a liquid pressure medium in a diamond anvil cell

Jaramillo, R. and Feng, Yejun and Rosenbaum, T. F. (2012) Four-probe electrical measurements with a liquid pressure medium in a diamond anvil cell. Review of Scientific Instruments, 83 (10). Art. No. 103902. ISSN 0034-6748. doi:10.1063/1.4757178. https://resolver.caltech.edu/CaltechAUTHORS:20140707-163024196

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Abstract

We describe a technique for making electrical transport measurements in a diamond anvil cell using an alcohol pressure medium, permitting acute sensitivity while preserving sample fidelity. The sample is suspended in the liquid medium by four gold leads that are electrically isolated by a composite gasket made of stainless steel and an alumina-loaded epoxy. We demonstrate the technique with four-probe resistivity measurements of chromium single crystals at temperatures down to 4 K and pressures above 10 GPa. Our assembly is optimized for making high precision measurements of the magnetic phase diagram and quantum critical regime of chromium, which require repeated temperature sweeps and fine pressure steps while maintaining high sample quality. The high sample quality enabled by the quasi-hydrostatic pressure medium is evidenced by the residual resistivity below 0.1 μΩ cm and the relative resistivity ratio ρ(120 K)/ρ(5 K) = 15.9 at 11.4 GPa. By studying the quality of Cr's antiferromagnetic transition over a range of pressures, we show that the pressure inhomogeneity experienced by the sample is always below 5%. Finally, we solve for the Debye temperature of Cr up to 11.4 GPa using the Bloch-Gruneisen formula and find it to be independent of pressure.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.4757178DOIArticle
http://scitation.aip.org/content/aip/journal/rsi/83/10/10.1063/1.4757178PublisherArticle
ORCID:
AuthorORCID
Feng, Yejun0000-0003-3667-056X
Additional Information:© 2012 American Institute of Physics. (Received 2 August 2012; accepted 17 September 2012; published online 8 October 2012). The work at the University of Chicago was supported by National Science Foundation Grant No. DMR-1206519. The work at the Advanced Photon Source of the Argonne National Laboratory was supported by the U.S. DOE-BES under Contract No. DE-AC02-06CH11357.
Funders:
Funding AgencyGrant Number
NSFDMR-1206519
Department of Energy (DOE)DE-AC02-06CH11357
Issue or Number:10
DOI:10.1063/1.4757178
Record Number:CaltechAUTHORS:20140707-163024196
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140707-163024196
Official Citation:Four-probe electrical measurements with a liquid pressure medium in a diamond anvil cell Jaramillo, R. and Feng, Yejun and Rosenbaum, T. F., Review of Scientific Instruments, 83, 103902 (2012), DOI:http://dx.doi.org/10.1063/1.4757178
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46920
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:14 Jul 2014 16:25
Last Modified:10 Nov 2021 17:31

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