Electronic structure and magnetic properties of the strong-rung spin-1 ladder compound Rb3Ni2(NO3)7

• Verfasst von: Pchelkina, Zlata V. [VerfasserIn]
• Verfasst von: Werner, Johannes [VerfasserIn]
• Verfasst von: Koo, Changhyun [VerfasserIn]
• Verfasst von: Klingeler, Rüdiger [VerfasserIn]
• Titel: Electronic structure and magnetic properties of the strong-rung spin-1 ladder compound Rb3Ni2(NO3)7
• Verf.angabe: 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
• E-Jahr: 2018
• Jahr: 24 April 2018
• Illustrationen: Illustrationen
• Fussnoten: Die Ziffern 3, 2, 3 und 7 in Rb3Ni2(NO3)7 sind tiefgestellt ; Gesehen am 10.02.2020
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2018
• Band/Heft Quelle: 97(2018,14) Artikel-Nummer 144420, Seite 1-10, 10 Seiten
• ISSN Quelle: 2469-9969
• DOI: doi:10.1103/PhysRevB.97.144420
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1689725796

Abstract

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.