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Tunable (dp, dp)-Type Antiferromagnetic Order in a-Fe(Te,Se) Superconductors

Bao, Wei, Qui, Y, Green, M.A., Huang, Q, Zajdel, Pawel, Fitzsimmons, M. R, Zhernenkov, M, Chang, Shoude, Fang, Minghu, Qian, B, and others. (2009) Tunable (dp, dp)-Type Antiferromagnetic Order in a-Fe(Te,Se) Superconductors. Physical Review Letters: Moving Physics Forward, 102 (24). ISSN 0031-9007. (doi:10.1103/PhysRevLett.102.247001) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1103/PhysRevLett.102.247001

Abstract

The new ?-Fe(Te,Se) superconductors share the common iron building block and ferminology with the LaFeAsO and BaFe2As2 families of superconductors. In contrast with the predicted commensurate spin-density-wave order at the nesting wave vector (?, 0), a completely different magnetic order with a composition tunable propagation vector (??, ??) was determined for the parent compound Fe1+yTe in this powder and single-crystal neutron diffraction study. The new antiferromagnetic order survives as a short-range one even in the highest TC sample. An alternative to the prevailing nesting Fermi surface mechanism is required to understand the latest family of ferrous superconductors.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.102.247001
Additional information: article number: 247001;
Subjects: Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Mark Green
Date Deposited: 07 Mar 2014 00:05 UTC
Last Modified: 29 May 2019 12:25 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/40478 (The current URI for this page, for reference purposes)
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