Dresden 2014 – scientific programme

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O: Fachverband Oberflächenphysik

O 51: Surface and Interface Magnetism I (O jointly with MA)

O 51.10: Talk

Wednesday, April 2, 2014, 12:45–13:00, WIL C107

Surface electronic properties of Ni(111) investigated by low-temperature scanning tunneling spectroscopy — •Andreas Krönlein, Jeannette Kemmer, Pin-Jui Hsu, and Matthias Bode — Physikalisches Institut, Experimentelle Physik II, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany

Although the general electronic properties of Ni(111) have been intensively investigated theoretically and experimentally, the exact position of the majority and minority surface state bands is still under debate [1,2,3,4]. We have performed scanning tunneling spectroscopy measurements at T = 5.5 K to investigate the electronic properties of Ni(111) above and below the Fermi level with high energy resolution. Our data allow for the precise determination of band onsets and effective masses of the sp-derived surface states and thereby enable us to quantify their magnetic exchange splitting.

[1] M. Donath et al., Phys. Rev. Lett. 70, 2802 (1993).
J. Braun et al., J. Phys.: Condens. Matter 16, S2539 (2004).
T. Ohwaki et al., Phys. Rev. B 73, 235424 (2006).
J. Lobo-Checa et al., Phys. Rev. B 77, 075415 (2008).