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/

Global: Zendy Plus annual

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

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We theoretically predict two new classes of three-dimensional topologicalcrystalline insulators (TCIs), which have an odd number of unpinned surfaceDirac cones protected by crystal symmetries. The first class is protected by asingle glide plane symmetry; the second class is protected by a composition ofa twofold rotation and time-reversal symmetry. Both classes of TCIs arecharacterized by a quantized $\pi$ Berry phase associated with surface statesand a $Z_2$ topological invariant associated with the bulk bands. In thepresence of disorder, these TCI surface states are protected againstlocalization by the average crystal symmetries, and exhibit criticalconductivity in the universality class of the quantum Hall plateau transition.These new TCIs exist in time-reversal-breaking systems with or withoutspin-orbital coupling, and their material realizations are discussed.

New classes of topological crystalline insulators with unpinned surface Dirac cones