Tag: Symmetry (geometry)
Screening finds 180 materials with significant altermagnetic spin splitting
What the study found The study found 180 materials with significant altermagnetic spin splitting. These materials include both metallic and semiconducting systems, and some representative cases discussed are UCr2Si2C, NbMnP, and YRuO3. Why the authors say this matters The authors say altermagnetism is promising for next-generation spintronics because it can produce sizable spin splitting in…
Modulating unit cells changes topological phases in a photonic Lieb lattice
What the study found The study found that relaxing a specific spatial symmetry of the unit cell in a gyromagnetic photonic crystal can produce a hierarchy of topological phases. These include first-order Chern phases and second-order dipole and quadrupole phases, with both edge states and corner states appearing across different phases. Why the authors say…
Collinear-limit OPEs preserve translation symmetry with sub-leading terms
What the study found The authors find that the leading term in the operator algebra of light-transformed operators is fixed only when sub-leading terms are taken into account. They also derive a scaling dimension and an OPE coefficient for the leading term, and begin a similar study for shadow-transformed graviton correlators. Why the authors say…
