Document Type
Article
Original Publication Date
2004
Journal/Book/Conference Title
Physical Review B
Volume
69
Issue
14
DOI of Original Publication
10.1103/PhysRevB.69.144418
Date of Submission
May 2015
Abstract
A synergistic study, using gradient corrected density functional theory and photoelectron spectroscopy, shows that the presence of oxygen can fundamentally alter the interaction between two Mn atoms. The normally weak interaction between two Mn atoms exhibits strong bonding when an oxygen atom is added to form Mn2O. This allows the atomiclike magnetic moments of each Mn atom to couple either ferromagnetically or antiferromagnetically depending on whether Mn2O is anionic or neutral. Furthermore, the Mn2O− anion is found to possess an antiferromagnetic isomer that lies only 0.01 eV above its nearly degenerate ferromagnetic ground state. The possibility of exploiting this magnetic bistability in the design of nanoscale piezomagnetic materials is discussed.
Rights
Khanna, S.N., Jena, P., Zheng, W.-J., et al. Spectroscopic signature of magnetic bistability in Mn2O− anions and its implications for piezomagnetism at the nanoscale. Physical Review B, 69, 144418 (2004). Copyright © 2004 American Physical Society.
Is Part Of
VCU Physics Publications
Comments
Originally published by the American Physical Society at: http://dx.doi.org/10.1103/PhysRevB.69.144418