Y. Meng, Kh. Zakeri, Arthur Ernst, Tsung-Hao Chuang, H.J. Qin, Y.-J. Chen, J. Kirschner,
"Direct evidence of antiferromagnetic exchange interaction in Fe(001) films: Strong magnon softening at the high-symmetry (M)over-bar point"
, in Physical Review B: Condensed Matter and Materials Physics, Vol. 90, Nummer 17, Seite(n) 174437, 11-2014, ISSN: 2469-9969
Original Titel:
Direct evidence of antiferromagnetic exchange interaction in Fe(001) films: Strong magnon softening at the high-symmetry (M)over-bar point
Sprache des Titels:
Englisch
Original Kurzfassung:
We report on the direct observation of a large unusual antiferromagnetic exchange interaction in Fe(001) films. By measuring the magnon dispersion relation over the entire Brillouin zone of an ultrathin Fe(001) film on Rh(001), we demonstrate that the signature of this unusual antiferromagnetic exchange interaction can be observed at the high-symmetry (M) over bar point. The exchange parameters are quantified by comparing the measured magnon dispersion relation with the results of our first-principles calculations. We suggest a way of examining the existence of an antiferromagnetic exchange interaction in layered magnetic structures and also a way of quantifying its strength.
Sprache der Kurzfassung:
Englisch
Journal:
Physical Review B: Condensed Matter and Materials Physics
Forschungs-