A1 publication Journal title Physical Review B Publication date November 2008 Volume, issue & page range or art. n 77, (19), 195118. Year 2008 Authors Errico L. A.; Darriba G.; Renteria M.; Tang Z.; Emmerich H.; Cottenier S. DOI http://dx.doi.org/10.1103/PhysRevB.77.195118