Electronic structure and magnetic properties of the strong-rung spin-1 ladder compound Rb3Ni2(NO3)7
Rb3Ni2(NO3)7 was obtained by crystallization from anhydrous nitric acid solution of rubidium nitrate and nickel nitrate hexahydrate. The crystal structure determined on single crystals implies isolated spin-1 two-leg ladders of Ni2+ ions connected by (NO3)− groups as basic elements. Magnetic suscept...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
24 April 2018
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| In: |
Physical review
Year: 2018, Volume: 97, Issue: 14 |
| ISSN: | 2469-9969 |
| DOI: | 10.1103/PhysRevB.97.144420 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1103/PhysRevB.97.144420 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.97.144420 
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| Author Notes: | Z. V. Pchelkina, V. V. Mazurenko, O. S. Volkova, E. B. Deeva, I. V. Morozov, V. V. Shutov, S. I. Troyanov, J. Werner, C. Koo, R. Klingeler, A. N. Vasiliev |
| Summary: | Rb3Ni2(NO3)7 was obtained by crystallization from anhydrous nitric acid solution of rubidium nitrate and nickel nitrate hexahydrate. The crystal structure determined on single crystals implies isolated spin-1 two-leg ladders of Ni2+ ions connected by (NO3)− groups as basic elements. Magnetic susceptibility, specific heat in magnetic fields up to 9 T, magnetization, and high-frequency electron spin resonance studies performed on powder samples show the absence of long-range magnetic order at T≥2 K. Electronic structure calculations and the detailed analysis of the experimental data enable quantitative estimates of the relevant parameters of the S=1 ladders in Rb3Ni2(NO3)7. The rung coupling J1=10.16 K, the leg coupling J2=1.5 K, and the Ising-type anisotropy |A|=8.6 K are obtained. The scenario of a valence-bond solidlike quantum ground state realized in the two-leg Ni2+ ladders is further corroborated by model simulations of the magnetic susceptibility. |
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| Item Description: | Die Ziffern 3, 2, 3 und 7 in Rb3Ni2(NO3)7 sind tiefgestellt Gesehen am 10.02.2020 |
| Physical Description: | Online Resource |
| ISSN: | 2469-9969 |
| DOI: | 10.1103/PhysRevB.97.144420 |