Horizontal flux growth as an efficient preparation method of CeRh 2 As 2 single crystals.

We report an efficient method to obtain CeRh 2 As 2 single crystals with the use of a bismuth flux growth method in a horizontal configuration. Based on our numerous attempts, we found this technique to be scalable and repeatable. The crystals thus obtained are characterized by much sharper phase transitions and distinctly higher characteristic temperatures T c and T 0 , compared to previous reports. Moreover, based on our specific heat studies of the obtained single crystals, we also indicate a clear connection between both transition temperatures.