Skip to main content

Nematic and spin-charge orders driven by hole-doping a charge-transfer insulator

Cornell Affiliated Author(s)

Author

M.H. Fischer
S. Wu
M. Lawler
A. Paramekanti
Eun-Ah Kim

Abstract

Recent experimental discoveries have brought a diverse set of broken symmetry states to the center stage of research on cuprate superconductors. Here, we focus on a thematic understanding of the diverse phenomenology by exploring a strong-coupling mechanism of symmetry breaking driven by frustration of antiferromagnetic (AFM) order. We achieve this through a variational study of a three-band model of the CuO2 plane with Kondo type exchange couplings between doped oxygen holes and classical copper spins. Two main findings from this strong-coupling multi-band perspective are (1) that the symmetry hierarchy of spin stripe, charge stripe, intra-unit-cell nematic order and isotropic phases are all accessible microscopically within the model, (2) many symmetry-breaking patterns compete with energy differences within a few meV per Cu atom to produce a rich phase diagram. These results indicate that the diverse phenomenology of broken-symmetry states in hole-doped AFM charge-transfer insulators may indeed arise from hole-doped frustration of antiferromagnetism. © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Date Published

Journal

New Journal of Physics

Volume

16

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907611627&doi=10.1088%2f1367-2630%2f16%2f9%2f093057&partnerID=40&md5=57c495583c93b606b2d6fee69086ef20

DOI

10.1088/1367-2630/16/9/093057

Group (Lab)

Michael Lawler Group

Download citation