Symmetry of superconducting states with two orbitals on a tetragonal lattice: Application to LaFeAsO1-x Fx

Physical Review B - Condensed Matter and Materials Physics

Volumn 78, Issue 6, 2008, Pages

  Zhou, Yi ^a,b   Chen, Wei Qiang ^a   Zhang, Fu Chun ^a  

^a UNIVERSITY OF HONG KONG   (Hong Kong)

^b CHINESE UNIVERSITY OF HONG KONG   (Hong Kong)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 50449103543     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.78.064514     Document Type: Article

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34. If the lattice undergoes a structural transition, e.g., the transition from tetragonal (P4/nmm) to monoclinic (P112/n) in the parent compound LaFeAsO, lattice symmetry will be reduced and thereby the pairing states within each representation of D4 will be further splitted by energy. However, Pspace, Pspin, and Porbital considered in this paper are still good quantum numbers. Moreover, when the monoclinic distortion to tetragonal phase is small as in practice (Ref.), our study is a good approximation to such a monoclinic lattice.
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