Inhomogeneous Kondo-lattice in geometrically frustrated Pr2Ir2O7

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dc.citation.articleNumber1377
dc.citation.journalTitleNature Communications
dc.citation.volumeNumber12
dc.contributor.authorKavai, Mariam
dc.contributor.authorFriedman, Joel
dc.contributor.authorSherman, Kyle
dc.contributor.authorGong, Mingda
dc.contributor.authorGiannakis, Ioannis
dc.contributor.authorHajinazar, Samad
dc.contributor.authorHu, Haoyu
dc.contributor.authorGrefe, Sarah E.
dc.contributor.authorLeshen, Justin
dc.contributor.authorYang, Qiu
dc.contributor.authorNakatsuji, Satoru
dc.contributor.authorKolmogorov, Aleksey N.
dc.contributor.authorSi, Qimiao
dc.contributor.authorLawler, Michael
dc.contributor.authorAynajian, Pegor
dc.contributor.orgRice Center for Quantum Materials
dc.date.accessioned2021-04-21T15:46:25Z
dc.date.available2021-04-21T15:46:25Z
dc.date.issued2021
dc.description.abstractMagnetic fluctuations induced by geometric frustration of local Ir-spins disturb the formation of long-range magnetic order in the family of pyrochlore iridates. As a consequence, Pr2Ir2O7 lies at a tuning-free antiferromagnetic-to-paramagnetic quantum critical point and exhibits an array of complex phenomena including the Kondo effect, biquadratic band structure, and metallic spin liquid. Using spectroscopic imaging with the scanning tunneling microscope, complemented with machine learning, density functional theory and theoretical modeling, we probe the local electronic states in Pr2Ir2O7 and find an electronic phase separation. Nanoscale regions with a well-defined Kondo resonance are interweaved with a non-magnetic metallic phase with Kondo-destruction. These spatial nanoscale patterns display a fractal geometry with power-law behavior extended over two decades, consistent with being in proximity to a critical point. Our discovery reveals a nanoscale tuning route, viz. using a spatial variation of the electronic potential as a means of adjusting the balance between Kondo entanglement and geometric frustration.
dc.identifier.citationKavai, Mariam, Friedman, Joel, Sherman, Kyle, et al.. "Inhomogeneous Kondo-lattice in geometrically frustrated Pr2Ir2O7." <i>Nature Communications,</i> 12, (2021) Springer Nature: https://doi.org/10.1038/s41467-021-21698-z.
dc.identifier.digitals41467-021-21698-z
dc.identifier.doihttps://doi.org/10.1038/s41467-021-21698-z
dc.identifier.urihttps://hdl.handle.net/1911/110307
dc.language.isoeng
dc.publisherSpringer Nature
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleInhomogeneous Kondo-lattice in geometrically frustrated Pr2Ir2O7
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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