Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides

J. K. Glasbrenner, I. I. Mazin, Harald Olaf Jeschke, P. J. Hirschfeld, R. M. Fernandes, Roser Valentí

Research output: Contribution to journalArticle

148 Citations (Scopus)

Abstract

Over the past few years iron chalcogenides have been intensively studied as part of the wider family of iron-based superconductors, with many intriguing results reported so far on intercalated and monolayer FeSe. Nevertheless, bulk FeSe itself remains an unusual case when compared with pnictogen-based iron superconductors, and may hold clues to understanding the more exotic derivatives of the FeSe system. The FeSe phase diagram is distinct from the pnictides: the orthorhombic distortion, which is likely to be of a 'spin-nematic' nature in numerous pnictides, is not accompanied by magnetic order in FeSe, and the superconducting transition temperature Tc rises significantly with pressure before decreasing. Here we show that the magnetic interactions in FeSe, as opposed to most pnictides, demonstrate an unusual and unanticipated frustration, which suppresses magnetic (but not nematic) order, triggers ferro-orbital order in the nematic phase and can naturally explain the non-monotonic pressure dependence of the superconducting critical temperature Tc(P).

Original languageEnglish
Pages (from-to)953-958
Number of pages6
JournalNature Physics
Volume11
Issue number11
DOIs
Publication statusPublished - Nov 1 2015
Externally publishedYes

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Group 5A compounds
chalcogenides
frustration
superconductivity
iron
pressure dependence
critical temperature
actuators
transition temperature
phase diagrams
orbitals
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Glasbrenner, J. K., Mazin, I. I., Jeschke, H. O., Hirschfeld, P. J., Fernandes, R. M., & Valentí, R. (2015). Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides. Nature Physics, 11(11), 953-958. https://doi.org/10.1038/nphys3434

Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides. / Glasbrenner, J. K.; Mazin, I. I.; Jeschke, Harald Olaf; Hirschfeld, P. J.; Fernandes, R. M.; Valentí, Roser.

In: Nature Physics, Vol. 11, No. 11, 01.11.2015, p. 953-958.

Research output: Contribution to journalArticle

Glasbrenner, JK, Mazin, II, Jeschke, HO, Hirschfeld, PJ, Fernandes, RM & Valentí, R 2015, 'Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides', Nature Physics, vol. 11, no. 11, pp. 953-958. https://doi.org/10.1038/nphys3434
Glasbrenner JK, Mazin II, Jeschke HO, Hirschfeld PJ, Fernandes RM, Valentí R. Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides. Nature Physics. 2015 Nov 1;11(11):953-958. https://doi.org/10.1038/nphys3434
Glasbrenner, J. K. ; Mazin, I. I. ; Jeschke, Harald Olaf ; Hirschfeld, P. J. ; Fernandes, R. M. ; Valentí, Roser. / Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides. In: Nature Physics. 2015 ; Vol. 11, No. 11. pp. 953-958.
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