Density-wave instabilities of fractionalized Fermi liquids
MetadataShow full item record
CitationChowdhury, Debanjan, and Subir Sachdev. 2014. “Density-Wave Instabilities of Fractionalized Fermi Liquids.” Phys. Rev. B 90 (24) (December). doi:10.1103/physrevb.90.245136.
AbstractRecent experiments in the underdoped regime of the hole-doped cuprates have found evidence for an incommensurate charge density-wave state. We present an analysis of the charge ordering instabilities in a metal with antiferromagnetic correlations, where the electronic excitations are coupled to the fractionalized excitations of a quantum fluctuating antiferromagnet on the square lattice. The resulting charge density-wave state emerging out of such a fractionalized Fermi liquid (FL*) has wave vectors of the form (±Q0,0),(0,±Q0), with a predominantly d-form factor, in agreement with experiments on a number of different families of the cuprates. In contrast, as previously shown, the charge density-wave instability of a nearly antiferromagnetic metal with a large Fermi surface, interacting via short-range interactions, has wave vectors of the type (±Q0,±Q0). Our results show that the observed charge density-wave appears as a low-energy instability of a fractionalized metallic state linked to the proximity to an antiferromagnetic insulator, and the pseudogap regime can be described by such a metal at least over intermediate length and energy scales.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:16310006
- FAS Scholarly Articles