Quantum-critical scale invariance in a transition metal alloy

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dc.contributor.authorNakajima, Yasuyuki
dc.contributor.authorMetz, Tristin
dc.contributor.authorEckberg, Christopher
dc.contributor.authorKirshenbaum, Kevin
dc.contributor.authorHughes, Alex
dc.contributor.authorWang, Renxiong
dc.contributor.authorWang, Limin
dc.contributor.authorSaha, Shanta R.
dc.contributor.authorLiu, I-Lin
dc.contributor.authorButch, Nicholas P.
dc.contributor.authorCampbell, Daniel
dc.contributor.authorEo, Yun Suk
dc.contributor.authorGraf, David
dc.contributor.authorLiu, Zhonghao
dc.contributor.authorBorisenko, Sergey V.
dc.contributor.authorZavalij, Peter Y.
dc.contributor.authorPaglione, Johnpierre
dc.date.accessioned2021-07-14T14:22:27Z
dc.date.available2021-07-14T14:22:27Z
dc.date.issued2020-10-15
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.en_US
dc.description.abstractQuantum-mechanical fluctuations between competing phases induce exotic collective excitations that exhibit anomalous behavior in transport and thermodynamic properties, and are often intimately linked to the appearance of unconventional Cooper pairing. High-temperature superconductivity, however, makes it difficult to assess the role of quantum-critical fluctuations in shaping anomalous finite-temperature physical properties. Here we report temperature-field scale invariance of non-Fermi liquid thermodynamic, transport, and Hall quantities in a non-superconducting iron-pnictide, Ba(Fe1/3Co1/3Ni1/3)2As2, indicative of quantum criticality at zero temperature and applied magnetic field. Beyond a linear-in-temperature resistivity, the hallmark signature of strong quasiparticle scattering, we find a scattering rate that obeys a universal scaling relation between temperature and applied magnetic fields down to the lowest energy scales. Together with the dominance of hole-like carriers close to the zero-temperature and zero-field limits, the scale invariance, isotropic field response, and lack of applied pressure sensitivity suggests a unique quantum critical system unhindered by a pairing instability.en_US
dc.description.urihttps://doi.org/10.1038/s42005-020-00448-5
dc.identifierhttps://doi.org/10.13016/8r0b-re3a
dc.identifier.citationNakajima, Y., Metz, T., Eckberg, C. et al. Quantum-critical scale invariance in a transition metal alloy. Commun Phys 3, 181 (2020).en_US
dc.identifier.urihttp://hdl.handle.net/1903/27497
dc.language.isoen_USen_US
dc.publisherSpringer Natureen_US
dc.relation.isAvailableAtCollege of Computer, Mathematical & Natural Sciencesen_us
dc.relation.isAvailableAtPhysicsen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectElectronic properties and materialsen_US
dc.subjectMagnetic properties and materialsen_US
dc.subjectPhase transitions and critical phenomenaen_US
dc.titleQuantum-critical scale invariance in a transition metal alloyen_US
dc.typeArticleen_US

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