Magnetization and electronic structure of FeAs layered material

Zabidi, Noriza Ahmad and Kassim, Hasan Abu and Shrivastava, Keshav N. (2011) Magnetization and electronic structure of FeAs layered material. Sains Malaysiana, 40 (2). pp. 177-180. ISSN 0126-6039

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Official URL: http://www.ukm.my/jsm/pdf_files/SM-PDF-40-2-2011/1...

Abstract

Magnetic induction in the superconductor (B=H +4πM) in the zero field cooled samples (ZFC) is not equal to zero. Depending upon the chemical environment it has negative value in some and positive values in some others. In the field cooled samples, the magnetization becomes paramagnetic. We have calculated the band structure of one layer of FeAs lattice with spin polarized as well as unpolarized orbitais as a function of doping by Li atoms. For n number of Li atoms (n=0, 1,..., 4), we calculated the band gap at all of the k-points as well as the Fermi energy. The reduced normal state gap was found to lead to superconductivity.

Item Type: Article
Uncontrolled Keywords: Band structure; Energy gap; FeAs; Fermi energy; Magnetic induction
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Zanaria Saupi Udin
Date Deposited: 26 Aug 2011 08:06
Last Modified: 15 Nov 2019 03:42
URI: http://eprints.um.edu.my/id/eprint/2073

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