Impurity Effect on Spin Ladder System

Journal of the Physical Society of Japan

Volumn 65, Issue 7, 1996, Pages 1949-1952

  Motome, Yukitoshi ^a   Katoh, Nobuyuki ^a   Furukawa, Nobuo ^a   Imada, Masatoshi ^a  

^a UNIVERSITY OF TOKYO   (Japan)

Author keywords

Long range RVB; Nonmagnetic impurity; Spin gap; Spin ladder model; Spinon doping; SrCu2O3; Zn doping

Indexed keywords

EID: 0030505761     PISSN: 00319015     EISSN: None     Source Type: Journal    
DOI: 10.1143/JPSJ.65.1949     Document Type: Article

References (20)

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17. This situation is related to the confinement of a local moment in the edge of the open ladder with an unpaired edge site investigated in ref. 11.
18. In the low doping concentration region, impurities rarely disconnect the multileg ladder structure when they are doped randomly. The disconnection of the ladder is one of the random effects which we neglect in this work. On the other hand, the S = 1 chain system is always disconnected by doped impurities. Therefore, induced S = 1/2 spins at the ends of each open chain cannot obtain quantum coherence and so that the bulk gap structure is not destroyed upon impurity doping.
19. After this work was finished, we received two reports on this topic. G. B. Martins, E. Dagotto and J. A. Riera: preprint; II. Fukuyama, N. Nagaosa, M. Saito and T. Tanimoto: preprint.
20. After this work was finished, we received two reports on this topic. G. B. Martins, E. Dagotto and J. A. Riera: preprint; II. Fukuyama, N. Nagaosa, M. Saito and T. Tanimoto: preprint.