Abstract
In the spin excitation spectrum is dominated by incommensurate fluctuations at , which arise from Fermi-surface nesting. We show that upon Ti substitution, known to suppress superconductivity, a short range magnetic order develops with a propagation vector (0.307 0.307 1). In , the ordered moment points along the direction. This finding shows that superconducting is extremely close to an incommensurate spin density wave instability.
- Received 27 July 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.197002
©2002 American Physical Society