Transport and thermodynamic studies of stripe and checkerboard ordering in layered nickel oxides R2-xSrxNiO4 (R = La and Nd)

Yoichi Ikeda, Shota Suzuki, Takuya Nakabayashi, Hideki Yoshizawa, Tetsuya Yokoo, Shinichi Itoh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We have investigated the Sr-doped layered nickelates Nd2-xSrxNiO4 and La2-xSrxNiO4 to elucidate qualitative differences between the stripe-type and checkerboard (CB)-type charge/spin ordered phases. From electrical resistivity, specific heat, magnetic susceptibility and inelastic neutron-scattering measurements, we construct a revised phase diagram around the border of the stripe and CB phases in Nd2-xSrxNiO4, and show the marked difference in the holeconcentration dependence of physical properties between two phases. These results strongly indicate that the CB order is not a simple structural limit of the stripe order.

Original languageEnglish
Article number023706
Journaljournal of the physical society of japan
Volume84
Issue number2
DOIs
Publication statusPublished - 2015 Feb 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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