Coexistence of of ΘII-loop-current order with checkerboard d-wave CDW/PDW order in a hot-spot model for cuprate superconductors

Carvalho, Vanuildo Silva de; Pépin, Catherine; Silva, Hermann Freire Ferreira Lima e

Coexistence of of ΘII-loop-current order with checkerboard d-wave CDW/PDW order in a hot-spot model for cuprate superconductors

Data

2016

Autores

Carvalho, Vanuildo Silva de

Pépin, Catherine

Silva, Hermann Freire Ferreira Lima e

Resumo

We investigate the strong influence of the II -loop-current order on both unidirectional and bidirectional d-wave charge-density-wave/pair-density-wave (CDW/PDW) composite orders along axial momenta (±Q0,0) and (0,±Q0) that emerge in an effective hot-spot model departing from the three-band Emery model relevant to the phenomenology of the cuprate superconductors. This study is motivated by the compelling evidence that the II -loop-current order described by this model may explain groundbreaking experiments such as spin-polarized neutron scattering performed in these materials. Here, we demonstrate, within a saddle-point approximation, that the II -loop-current order clearly coexists with bidirectional (i.e., checkerboard) d-wave CDW and PDW orders along axial momenta, but is visibly detrimental to the unidirectional (i.e., stripe) case. This result has potentially far-reaching implications for the physics of the cuprates and agrees well with very recent x-ray experiments on YBCO that indicate that at higher dopings the CDW order has indeed a tendency to be bidirectional.

Citação

CARVALHO, Vanuildo S. de; PEPIN, Catherine; Freire, Hermann. Coexistence of ΘII-loop-current order with checkerboard d-wave CDW/PDW order in a hot-spot model for cuprate superconductors. Physical Review B, College Park, v. 93, n. 11, e115144, 2016. DOI: 10.1103/PhysRevB.93.115144. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.115144. Acesso em: 18 set. 2023.