Reentrant Orbital Order and the True Ground State of LaSr2Mn2O7 (2007)
Li, Qing'An, Gray, K. E., Zheng, H., Claus, H., Rosenkranz, S., Ancona, S. Nyborg, ...
Contrary to conventional wisdom, our purified La2-2xSr1+2xMn2O7 crystals exhibit CE-type orbital and charge order as the low-temperature ground state for a hole doping level h = 0.5. For small...