Magnetic Studies of End-Chain Spin Effects in the Haldane Gap Material Ni(C3H10N2)2N3(ClO4)
G. E. Granroth, B. H. Ward, L. -K. Chou, G. E. Fanucci, S. Maegawa, N. S. Bell, J. H. Adair, J. Krzystek, L. -C. Brunel, D. R. Talham, M. W. Meisel
Abstract
Electron spin resonance (ESR), at 9, 94, and 190 GHz, and magnetization studies on polycrystalline, powder, and ultrafine powder samples of Ni(C3H10N2)2N3(ClO4) (NINAZ) have revealed several effects arising from the Haldane phase. Using the g value of the end-chain spin S as determined by ESR, our results confirm that the end-chain spins are S=1/2 and show no evidence for S=1 end-chains. In addition, the ESR signals reveal spectral weight consistent with a model describing interactions between the end-chain spins on the shortest chains and between the magnetic excitations on the chains and the end-chain spins.
Create a lesson
Related papers
Metallic electron crystals in rhombohedral graphene as a bridge to twisted WSe2
Wentai Deng, Chenyuan Li, Naoto Nakatsuji et al.
Anyons at impurities: Fractional charge measurement and "wrong sign" binding
Haydn S. Adlong, Arthur Christianen, Atac Imamoglu et al.
Large-Tiny Spin-Stripe SDW Order in La3Ni2O7 via 139La-NQR Spectroscopy: Reconsideration Based on the Am2m Structure
Mitsuharu Yashima, Hongnam Lee, Takumi Ino et al.
Influence of the Néel vector on the bulk electronic structure of MnTe measured from the (1 1 00) surface
D. A. Usanov, A. B. Hellenes, S. Hahn et al.
Disorder-Induced Griffiths like Phase and Charge Localization in Sr2FeRuO6
Koustav Pal, Shuvendu Ghosh, I. Das
Interplay of electric field and electronic correlations in pairing competition in bilayer nickelates
Yanmei Cai, Yicheng Xiong, Ying Liang et al.