The inplane anisotropy in the superconducting (SC) gap of the spin-triplet superconductor Sr2RuO4 from the field-orientation dependence of the specific heat at low temperatures was analyzed. A magnetic field was aligned parallel to the RuO2 planes with high accuracy. Single crystals of the compound were grown by a floating-zone method in an infrared image furnace. The gap structure in the active band was determined and the multiband superconductivity was identified. The SC state of the compound had a band-dependent gap and the gap of its active SC band had strong inplane anisotropy with a minimum along the  direction.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical Review Letters|
|State||Published - Jan 30 2004|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)