npj Quantum Materials, 2-1, 2017 doi:10.1038/s41535-017-0015-x
Lei Qingyu, Golalikhani Maryam, Davidson Bruce A., Liu Guozhen, Schlom Darrell G., Qiao Qiao, Zhu Yimei, Chandrasena Ravini U., Yang Weibing, Gray Alexander X., Arenholz Elke, Farrar Andrew K., Tenne Dmitri A., Hu Minhui, Guo Jiandong, Singh Rakesh K., Xi Xiaoxing