期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 84, 期 2, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.7566/JPSJ.84.023706
关键词
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资金
- Neutron Science Laboratory at ISSP
- Grants-in-Aid for Scientific Research [23244068, 24540352] Funding Source: KAKEN
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 hole-concentration 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.
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