Nodal-line semimetal superlattices

Double Helix Nodal Line Superconductor.

Time-reversal invariant superconductors in three dimensions may contain nodal lines in the Brillouin zone, which behave as Wilson loops of 3D momentum-space Chern-Simons theory of the Berry connection. Here we study the conditions of realizing linked nodal lines (Wilson loops), which yield a topological contribution to the thermal magnetoelectric coefficient that is given by the Chern-Simons ac...

Room-temperature magnetic topological Weyl fermion and nodal line semimetal states in half-metallic Heusler Co2TiX (X=Si, Ge, or Sn)

Topological semimetals (TSMs) including Weyl semimetals and nodal-line semimetals are expected to open the next frontier of condensed matter and materials science. Although the first inversion breaking Weyl semimetal was recently discovered in TaAs, its magnetic counterparts, i.e., the time-reversal breaking Weyl and nodal line semimetals, remain elusive. They are predicted to exhibit exotic pr...

Some Analogs of Zariski’s Theorem on Nodal Line Arrangements

For line arrangements in P with nice combinatorics (in particular, for those which are nodal away the line at infinity), we prove that the combinatorics contains the same information as the fundamental group together with the meridianal basis of the abelianization. We consider higher dimensional analogs of the above particular case. For these analogs, we give purely combinatorial complete descr...

Nodal-Price Dependent, Dual-Mode Transmission Line Protection Strategy

It is argued that the Independent Sgstem Operator (ISO) should be able to adjust the securitg and dependability of the protection sgstem in response to the system and market conditions. However, the existing protection philosophy’s multiple, overlapping schemes tend to favor individual elements over the secun”t~ of the wide-area. We revisit the rare-probability, hidden failures embedded within ...

Nodal-line entanglement entropy: Generalized Widom formula from entanglement Hamiltonians