@article {1910.04129, archivePrefix = {arXiv}, eprint = {1910.04129}, primaryClass = {cond-mat.stat-mech}, author = {Eva M. Fernández and Silvia N. Santalla and José Enrique Alvarellos and Javier Rodríguez-Laguna}, title = {Surface reconstructions under external magnetic fields}, year = {2019}, url = {http://arxiv.org/abs/1910.04129} }