On the origin of CE-type orbital fluctuations in the ferromagnetic metallic La${}_{1.2}$Sr${}_{1.8}$Mn${}_2$O${}_7$

Dheeraj Kumar Singh, Ki Hoon Lee, Tetsuya Takimoto

We investigate the orbital fluctuations in the ferromagnetic-metallic phase of La${}_{1.2}$Sr${}_{1.8}$Mn${}_2$O${}_7$ by considering a two orbital model within a tight-binding description…