Persistence of magnetic order in a highly excited Cu2+ state in CuO ανά Staub, U, de Souza, R, Beaud, P, Moehr-Vorobeva, E, Ingold, G, Caviezel, A, Scagnoli, V, Delley, B, Turner, J, Krupin, O, Lee, W, Chuang, Y, Patthey, L, Moore, R, Lu, D, Yi, M, Kirchmann, P, Trigo, M, Denes, P, Doering, D, Hussain, Z, Shen, Z, Prabhakaran, D, Boothroyd, A, Johnson, S