English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The electronic nematic phase is characterized as an ordered state of matterwith rotational symmetry breaking, and has been well studied in the quantumHall system and the high-$T_c$ superconductors, regardless of cuprate orpnictide family. The nematic state in high-$T_c$ systems often relates to thestructural transition or electronic instability in the normal phase.Nevertheless, the electronic states below the superconducting transitiontemperature is still an open question. With high-resolution scanning tunnelingmicroscope measurements, direct observation of vortex core in FeSe thin filmsrevealed the nematic superconducting state by Song \emph{et al}. Here,motivated by the experiment, we construct the extended Ginzburg-Landau freeenergy to describe the elliptical vortex, where a mixed \emph{s}-wave and\emph{d}-wave superconducting order is coupled to the nematic order. Thenematic order induces the mixture of two superconducting orders and enhancesthe anisotropic interaction between the two superconducting orders, resultingin a symmetry breaking from $C_4$ to $C_2$. Consequently, the vortex cores arestretched into an elliptical shape. In the equilibrium state, the ellipticalvortices assemble a lozenge-like vortex lattice, being well consistent withexperimental results.

Elliptical vortex and oblique vortex lattice in the FeSe superconductor based on the nematicity and mixed superconducting orders