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Spectral evidence for emergent order in Ba1−xNaxFe2As2

We report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba1−xNaxFe2As2. This system harbors the recently discovered double-Q magnetic order appearing in a reentrant C4 phase deep within the underdoped regime of the phase diagram that is otherwise dominat...

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Main Authors: Yi, M. (Author) , Frano, A. (Author) , Lu, D. H. (Author) , He, Y. (Author) , Wang, Meng (Author) , Frandsen, B. A. (Author) , Kemper, A. F. (Author) , Yu, R. (Author) , Si, Q. (Author) , Wang, Liran (Author) , He, M. (Author) , Hardy, F. (Author) , Schweiss, P. (Author) , Adelmann, P. (Author) , Wolf, T. (Author) , Hashimoto, M. (Author) , Mo, S.-K. (Author) , Hussain, Z. (Author) , Le Tacon, M. (Author) , Böhmer, A. E. (Author) , Lee, D.-H. (Author) , Shen, Z.-X. (Author) , Meingast, C. (Author) , Birgeneau, R. J. (Author)
Format: Article (Journal)
Language:English
Published: 18 September 2018
In: Physical review letters
Year: 2018, Volume: 121, Issue: 12
ISSN:1079-7114
DOI:10.1103/PhysRevLett.121.127001
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.121.127001
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.121.127001
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Author Notes:M. Yi, A. Frano, D.H. Lu, Y. He, Meng Wang, B.A. Frandsen, A.F. Kemper, R. Yu, Q. Si, L. Wang, M. He, F. Hardy, P. Schweiss, P. Adelmann, T. Wolf, M. Hashimoto, S.-K. Mo, Z. Hussain, M. Le Tacon, A.E. Böhmer, D.-H. Lee, Z.-X. Shen, C. Meingast, and R.J. Birgeneau
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Summary:We report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba1−xNaxFe2As2. This system harbors the recently discovered double-Q magnetic order appearing in a reentrant C4 phase deep within the underdoped regime of the phase diagram that is otherwise dominated by the coupled nematic phase and collinear antiferromagnetic order. From a detailed temperature-dependence study, we identify the electronic response to the nematic phase in an orbital-dependent band shift that strictly follows the rotational symmetry of the lattice and disappears when the system restores C4 symmetry in the low temperature phase. In addition, we report the observation of a distinct electronic reconstruction that cannot be explained by the known electronic orders in the system.
Item Description:Im Titel erscheinen die Zeichen 1-x, x und 2 jeweils tiefgestellt
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Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.121.127001

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