Two-Dimensional Mn Structure on the GaN Growth Surface and Evidence for Room-Temperature Spin Ordering

Kangkang Wang,¹ Noboru Takeuchi,^1,2 Abhijit V. Chinchore,¹ Wenzhi Lin,¹ Yinghao Liu,¹ and Arthur R. Smith<sup>1

1</sup>Department of Physics and Astronomy, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, OH  45701, USA
²Centro de Nanociencias y Nanotecnologia, Universidad Nacional Autonoma de Mexico, Apartado Postal 14, Ensenada Baja California, Codigo Postal 22800, Mexico