Low temperature ESR in spin ladder (C<inf>7</inf>H<inf>10</inf>N)<inf>2</inf>Cu<inf>(1-x)</inf>Zn<inf>x</inf>Br<inf>4</inf>

Abstract

© Published under licence by IOP Publishing Ltd. Spin-gap magnet (C7H10N)2Cu(1-x)ZnxBr4(DIMPY) is an example of a strong-leg spin ladder. We report here the results of the ESR study of pure and diamagnetically diluted DIMPY. ESR study of the pure system (x=0) revealed that the spin dynamics of DIMPY is affected by uniform Dzyaloshinskii-Moriya (DM) interaction. We observe narrowing of the ESR absorption line in diamagnetically diluted DIMPY pointing to suppression of DM channel of spin relaxation by doping.