Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors

R. M. Fernandes, S. A. Kivelson, E. Berg

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


Recent experiments in optimally hole-doped iron arsenides have revealed a novel magnetically ordered ground state that preserves tetragonal symmetry, consistent with either a charge-spin density wave (CSDW), which displays a nonuniform magnetization, or a spin-vortex crystal (SVC), which displays a noncollinear magnetization. Here we show that, similarly to the partial melting of the usual stripe antiferromagnet into a nematic phase, either of these phases can also melt in two stages. As a result, intermediate paramagnetic phases with vestigial order appears: a checkerboard charge density wave for the CSDW ground state, characterized by an Ising-like order parameter, and a remarkable spin-vorticity density wave for the SVC ground state - a triplet d-density wave characterized by a vector chiral order parameter. We propose experimentally detectable signatures of these phases, show that their fluctuations can enhance the superconducting transition temperature, and discuss their relevance to other correlated materials.

Original languageEnglish (US)
Article number014511
JournalPhysical Review B
Issue number1
StatePublished - Jan 19 2016

Bibliographical note

Funding Information:
U.S. Department of Energy Department of Energy DOE DE-SC0012336 DE-AC02-76SF00515 United States - Israel Binational Science Foundation BSF National Science Foundation NSF PHY-1066293 We thank C. Batista, A. Boehmer, A. Chubukov, J. Kang, C. Meingast, R. Osborn, M. Schuett, and X. Wang for fruitful discussions. R.M.F. is supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-SC0012336. S.A.K. is supported by the U.S. Department of Energy under Contract No. DE-AC02-76SF00515. E.B. was supported by the Israeli Science Foundation, by the US-Israel Binational Science Foundation, and by an Alon fellowship. We thank the hospitality of the Aspen Center for Physics, where this work was initiated. The Aspen Center for Physics is supported by National Science Foundation Grant No. PHY-1066293.

Publisher Copyright:
© 2016 American Physical Society.


Dive into the research topics of 'Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors'. Together they form a unique fingerprint.

Cite this