Collapsed tetragonal phase transition in LaRu2P2 Goldman, Alan Drachuck, Gil Sapkota, Aashish Jayasekara, Wageesha Canfield, Paul Kothapalli, Karunakar Bud’ko, Sergey Goldman, Alan Kreyssig, Andreas Canfield, Paul
dc.contributor.department Ames Laboratory
dc.contributor.department Physics and Astronomy 2018-02-19T05:18:51.000 2020-06-29T23:23:47Z 2020-06-29T23:23:47Z 2017-11-01
dc.description.abstract <p>The structural properties of LaRu2P2 under external pressure have been studied up to 14 GPa, employing high-energy x-ray diffraction in a diamond-anvil pressure cell. At ambient conditions, LaRu2P2 (<em>I</em>4/<em>mmm</em>) has a tetragonal structure with a bulk modulus of B=105(2) GPa and exhibits superconductivity at Tc=4.1 K. With the application of pressure, LaRu2P2 undergoes a phase transition to a collapsed tetragonal (cT) state with a bulk modulus of B=175(5) GPa. At the transition, the c-lattice parameter exhibits a sharp decrease with a concurrent increase of the a-lattice parameter. The cT phase transition in LaRu2P2 is consistent with a second-order transition, and was found to be temperature dependent, increasing from P=3.9(3) GPa at 160 K to P=4.6(3) GPa at 300 K. In total, our data are consistent with the cT transition being near, but slightly above 2 GPa at 5 K where superconductivity is suppressed. Finally, we compare the effect of physical and chemical pressure in the <em>R</em>Ru2P2 (<em>R</em> = Y, La–Er, Yb) isostructural series of compounds and find them to be analogous.</p>
dc.identifier archive/
dc.identifier.articleid 1060
dc.identifier.contextkey 11169832
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_manuscripts/53
dc.language.iso en
dc.relation.ispartofseries IS-J9507
dc.source.bitstream archive/|||Sat Jan 15 00:50:32 UTC 2022
dc.source.uri 10.1103/PhysRevB.96.184509
dc.subject.disciplines Condensed Matter Physics
dc.title Collapsed tetragonal phase transition in LaRu2P2
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication c31f41cd-56c9-4b72-a034-c13cd4ec4d43
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relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication 4a05cd4d-8749-4cff-96b1-32eca381d930
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