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Volumn 92, Issue 18, 2004, Pages

Spin splitting of s and p states in single atoms and magnetic coupling in dimers on a surface

Author keywords

[No Author keywords available]

Indexed keywords

ANNEALING; ANTIFERROMAGNETISM; APPROXIMATION THEORY; ELECTRIC POTENTIAL; FERROMAGNETISM; IMAGING TECHNIQUES; PROBABILITY DENSITY FUNCTION; SCANNING TUNNELING MICROSCOPY; SPUTTERING; THIN FILMS; X RAY PHOTOELECTRON SPECTROSCOPY;

EID: 2942689949     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.92.186802     Document Type: Article
Times cited : (45)

References (29)
  • 1
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    • S. Heinze et al., Science 288, 1805 (2000).
    • (2000) Science , vol.288 , pp. 1805
    • Heinze, S.1
  • 3
    • 0032562570 scopus 로고    scopus 로고
    • V. Madhavan et al., Science 280, 567 (1998).
    • (1998) Science , vol.280 , pp. 567
    • Madhavan, V.1
  • 11
    • 85032430453 scopus 로고    scopus 로고
    • note
    • Different Wand Ag tips were used for the experiments. Further modifications to the tip apex were made through field emission and controlled contact with the surface in each experiment.
  • 16
    • 85032429793 scopus 로고    scopus 로고
    • note
    • The negative differential resistance (NDR) features observed for Mn adatom and addimer (Fig. 1) can be accounted for by including the negative contribution to dI/dV that arises from the dependence of the tunneling barrier on the sample bias. This phenomenon is the subject of a forthcoming publication. The NDR feature is tip dependent and is observed for a majority of Wand Ag tips with potentially different terminations. Tip dependent variations in spectral intensity are characteristic of STS.
  • 17
    • 12844286241 scopus 로고
    • G. Kresse and J. Hafner, Phys. Rev. B 47, 558 (1993); G. Kresse and J. Furthmüller, Phys. Rev. B 54, 11169 (1996); G. Kresse and D. Joubert, Phys. Rev. B 59, 1758 (1999).
    • (1993) Phys. Rev. B , vol.47 , pp. 558
    • Kresse, G.1    Hafner, J.2
  • 18
    • 2442537377 scopus 로고    scopus 로고
    • G. Kresse and J. Hafner, Phys. Rev. B 47, 558 (1993); G. Kresse and J. Furthmüller, Phys. Rev. B 54, 11169 (1996); G. Kresse and D. Joubert, Phys. Rev. B 59, 1758 (1999).
    • (1996) Phys. Rev. B , vol.54 , pp. 11169
    • Kresse, G.1    Furthmüller, J.2
  • 19
    • 0011236321 scopus 로고    scopus 로고
    • G. Kresse and J. Hafner, Phys. Rev. B 47, 558 (1993); G. Kresse and J. Furthmüller, Phys. Rev. B 54, 11169 (1996); G. Kresse and D. Joubert, Phys. Rev. B 59, 1758 (1999).
    • (1999) Phys. Rev. B , vol.59 , pp. 1758
    • Kresse, G.1    Joubert, D.2
  • 21
    • 85032429034 scopus 로고    scopus 로고
    • note
    • The 3 × 2 and the 4 × 2 surface unit cells were used for the adatoms and the addimers, respectively. The vacuum region was 14.4 Å. The surface Brillouin zones for the adatoms and the addimers were sampled with 36 and 24 k points, respectively. A Fermi level smearing of 0.2 eV and a plane wave cutoff of about 200 eV were used.
  • 24
    • 85032427050 scopus 로고    scopus 로고
    • note
    • The bias dependence of the potential barrier was included approximately in the LDOS through the vacuum tails of the wave functions.
  • 26
    • 85032429241 scopus 로고    scopus 로고
    • note
    • Majority-spin d states are completely filled for Mn, Fe, and Co. Therefore, the degree of occupation for minority-spin d states determines the magnetic properties. Spin splitting in the s, p states induced by d electrons is relatively small [Fig. 2(a)].
  • 27
    • 85032429259 scopus 로고    scopus 로고
    • note
    • Our DFT results for the dimers are in agreement with the PW91 results presented in Ref. [26].
  • 29
    • 85032427811 scopus 로고    scopus 로고
    • note
    • dI/dV spectra at different points along the length of the addimers were recorded Overall spectral features observed at the center of an addimer (Fig. 1) were preserved along its length. However, there were subtle differences in the relative peak intensities; resonances with spatially symmetric (antisymmetric) character showed higher intensities at the center (ends) of the addimers.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.