The V(001) Surface Magnetism

✍ Scribed by L.M. García-Cruz; A.V. Gaftoi; A. Rubio-Ponce; A.E. García; R. Baquero

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 90 KB
• Volume: 220
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/1521-3951(200007)220:1<449::aid-pssb449>3.0.co;2-9

✦ Synopsis

Long ago, Allan suggested that the V(001) surface could be magnetic even if bulk vanadium is not. Later on, Freeman realized an ab-initio calculation (FLAPW) and got that the V(001) surface is not magnetic. Experiments by Rau and co-workers gave a finite magnetic moment and the question whether V(001) is magnetic or not was never settled. In this work, we face two aspects of this problem. In the first part, we explore with a tight-binding model the effect of the difference of 5.3% on the theoretical lattice parameter as compared to experiment. In the second part, we look at the effect that the contraction of the first interlayer distance has on the electronic structure at the surface. According to our results the possibility of a contraction up to 5% is worth studying in more detail since an overall acceptable agreement between experiment and theory seems to be more realistic in this way.