Polar Kerr effect from a time-reversal symmetry breaking unidirectional charge density wave

Martin Gradhand, Ilya Eremin, Johannes Knolle

Research output: Contribution to journalArticle (Academic Journal)

7 Citations (Scopus)
326 Downloads (Pure)

Abstract

We analyze the Hall conductivity σxy(ω) of a charge ordered state with momentum Q=(0,2Q) and calculate the intrinsic contribution to the Kerr angle ΘK using the fully reconstructed tight-binding band structure for layered cuprates beyond the low energy hot spot model and particle-hole symmetry. We show that such a unidirectional charge density wave (CDW), which breaks time-reversal symmetry, as recently put forward by Wang and Chubukov [Phys. Rev. B 90, 035149 (2014)], leads to a nonzero polar Kerr effect, as observed experimentally. In addition, we model a fluctuating CDW via a large quasiparticle damping of the order of the CDW gap and discuss possible implications for the pseudogap phase. We can qualitatively reproduce previous measurements of underdoped cuprates, but making quantitative connections to experiments is hampered by the sensitivity of the polar Kerr effect with respect to the complex refractive index n(ω).
Original languageEnglish
Article number060512
Number of pages6
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume91
Issue number6
DOIs
Publication statusPublished - 27 Feb 2015

Bibliographical note

Date of Acceptance: 04/02/2015
6 pages, 4 figures

Keywords

  • cond-mat.supr-con
  • cond-mat.str-el

Fingerprint Dive into the research topics of 'Polar Kerr effect from a time-reversal symmetry breaking unidirectional charge density wave'. Together they form a unique fingerprint.

Cite this