First-principles study of charging effect on magnetism of Pd (100) ultrathin films

Shogo Aihara, Hiroyuki Kageshima, Tomohiro Sakai, Tetsuya Sato

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10 Citations (Scopus)

Abstract

Calculations of electronic structure of free-standing Pd (100) ultrathin films of 2-6 monolayers (MLs), using first-principles calculation with pseudopotential method, show stable ferromagnetism in 4 ML and induced magnetic phase transition in 3 and 4 MLs by charging. The ferromagnetism, appearing due to large density of states attributed to 4d xz,yz flat bands at Fermi energy ε F, can be manipulated by charging through the change in the contribution of the 4d flat bands to ε F, where the surface carrier density of >10 13 cm -2 is necessary for the magnetic phase transition. This can be experimentally realized using techniques such as electric double layer transistors.

Original languageEnglish
Article number073910
JournalJournal of Applied Physics
Volume112
Issue number7
DOIs
Publication statusPublished - 2012 Oct 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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