Soliton lattices in the incommensurate spin-Peierls phase: Local distortions and magnetizations

Article

关键词: QUANTUM RENORMALIZATION-GROUPS;    HIGH-FIELD PHASE;    THERMODYNAMIC PROPERTIES;    HEISENBERG-CHAINS;    COMPOUND CUGEO3;    SYSTEM CUGEO3;    TRANSITIONS;    STATE;    POLYACETYLENE;    MODEL;   

DOI  :  10.1103/PhysRevB.60.9468

来源: SCIE

【 摘 要 】

It is shown that nonadiabatic fluctuations of the soliton lattice in the spin-Peierls system CuGeO3 lead to an important reduction of the NMR hue widths. These fluctuations are the zero-point motion of the massless phasonic excitations. Furthermore, we show that the discrepancy of x-ray and NMR soliton widths can be understood as the difference between a distortive and a magnetic width. Their ratio is controlled by the frustration of the spin system. By this work, theoretical and experimental results can be reconciled in two important points. [S0163-1829(99)04134-X].

【 授权许可】

Free