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dc.contributor.authorIshii, T.
Toda, R.
Hanaoka, Y.
Tokiwa, Y.
Shimozawa, M.
Kasahara, Y.
Endo, R.
Terashima, T.
Nevidomskyy, A.H.
Shibauchi, T.
Matsuda, Y.
dc.date.accessioned 2017-05-03T16:12:49Z
dc.date.available 2017-05-03T16:12:49Z
dc.date.issued 2016
dc.identifier.citation Ishii, T., Toda, R., Hanaoka, Y., et al.. "Tuning the Magnetic Quantum Criticality of Artificial Kondo Superlattices CeRhIn5/YbRhIn5." Physical Review Letters, 116, no. 20 (2016) American Physical Society: https://doi.org/10.1103/PhysRevLett.116.206401.
dc.identifier.urihttps://hdl.handle.net/1911/94125
dc.description.abstract The effects of reduced dimensions and the interfaces on antiferromagnetic quantum criticality are studied in epitaxial Kondo superlattices, with alternating n layers of heavy-fermion antiferromagnet CeRhIn5 and seven layers of normal metal YbRhIn5. As n is reduced, the Kondo coherence temperature is suppressed due to the reduction of effective Kondo screening. The Néel temperature is gradually suppressed as n decreases and the quasiparticle mass is strongly enhanced, implying dimensional control toward a quantum critical point. Magnetotransport measurements reveal that a quantum critical point is reached for the n=3 superlattice by applying small magnetic fields. Remarkably, the anisotropy of the quantum critical field is opposite to the expectations from the magnetic susceptibility in bulk CeRhIn5, suggesting that the Rashba spin-orbit interaction arising from the inversion symmetry breaking at the interface plays a key role for tuning the quantum criticality in the two-dimensional Kondo lattice.
dc.language.iso eng
dc.publisher American Physical Society
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.title Tuning the Magnetic Quantum Criticality of Artificial Kondo Superlattices CeRhIn5/YbRhIn5
dc.type Journal article
dc.citation.journalTitle Physical Review Letters
dc.citation.volumeNumber 116
dc.citation.issueNumber 20
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.116.206401
dc.identifier.pmid 27258878
dc.type.publication publisher version
dc.citation.articleNumber 206401


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