Nematic phase in the CE-regime of colossal magnetoresistive manganites

We report nematic phase tendencies around the first order CE transition in the two-orbital double exchange model with Jahn-Teller phonons at electronic density $n=0.5$. Starting with a random state at high temperatures, we employ a careful cool-down method using a Monte Carlo algorithm. We then monitor the spin structure factor $S(q)$ of the CE phase as a function of temperature. Near the critical temperature, $S(q)$ grows with decreasing temperature for both right- and left-ordered CE ladders, followed by a spontaneous symmetry breaking into one or the other as the critical temperature is achieved. Below the critical temperature a pure CE state with a staggered charge order is obtained. Our results are similar to those observed in pnictides in earlier studies.[1]\\ \\ [1]Shuhua Liang, Adriana More, and Elbio Dagotto, Phys. Rev. Lett. {\bf 111}, 047004 (2013).