| Literature DB >> 22182121 |
R Torchio1, Y O Kvashnin, S Pascarelli, O Mathon, C Marini, L Genovese, P Bruno, G Garbarino, A Dewaele, F Occelli, P Loubeyre.
Abstract
The structural stability of fcc Ni over a very large pressure range offers a unique opportunity to experimentally investigate how magnetism is modified by simple compression. K-edge x-ray magnetic circular dichroism (XMCD) shows that fcc Ni is ferromagnetic up to 200 GPa, contradicting recent predictions of an abrupt transition to a paramagnetic state at 160 GPa. Density functional theory calculations point out that the pressure evolution of the K-edge XMCD closely follows that of the p projected orbital moment rather than that of the total spin moment. The disappearance of magnetism in Ni is predicted to occur above 400 GPa.Year: 2011 PMID： 22182121 DOI： 10.1103/PhysRevLett.107.237202
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161