Dynamic magnetic response across the pressure-induced structural phase transition in CeNi

Mirmelstein, A.; Kolesnikov, Alexander I.; Ehlers, Georg; Abernathy, Douglas L.; Matvienko, V.; Sefat, Athena Safa; Podlesnyak, Andrey A.

doi:10.1103/PhysRevB.99.024401

Title: Dynamic magnetic response across the pressure-induced structural phase transition in CeNi

Journal Article · 01 January 2019 · Physical Review B

DOI: https://doi.org/10.1103/PhysRevB.99.024401 · OSTI ID:1489567

Mirmelstein, A. ^[1];

^[2];

^[2]; Matvienko, V. ^[1];

^[2];

^[2]

Russian Federal Nuclear Center VNIITF, Snezhinsk (Russia)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We report that the intermediate-valence compound CeNi experiences a pressure-induced first-order structural phase transition with an abrupt change in the unit cell volume, and as such constitutes an attractive system to study pressure-driven f-electron delocalization behavior in a system with an unstable f-electron shell. The inelastic neutron scattering study of the dynamic magnetic response of CeNi reveals that the structural transition increases the characteristic energy of magnetic fluctuations due to enhanced Ce 4f–Ni 3d hybridization. At the same time, the inelastic 4f magnetic form factor remains unchanged.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1489567

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 2 Vol. 99; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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