Spin-ladders with spin gaps: A description of a class of cuprates

Sudha Gopalan, T. M. Rice, M. Sigrist

We investigate the magnetic properties of the Cu-O planes in stoichiometric Sr${}_{n-1}$Cu${}_{n+1}$O${}_{2n}$ (n=3,5,7,...) which consist of CuO double chains periodically intergrown wi…