{
  "annotation_id": "d2f8084b-b060-4eea-86a7-747ed0d35e6f",
  "date_created": "2026-03-02T18:01:11.036000Z",
  "date_modified": "2026-03-02T18:01:11.036000Z",
  "file_hash": "c2ef9c1bebb5cdbbc363f2194e9b20b771f8a24504e0df94d1cda782e693ff30",
  "private": false,
  "record": {
    "abstract": "We consider layered heterostructures combining ordinary positive index\nmaterials and dispersive metamaterials. We show that these structures can\nexhibit a new type of photonic gap around frequencies where either the magnetic\npermeability \\mu or the electric permittivity \\epsilon of the metamaterial is\nzero. Although the interface of a semi-infinite medium with zero refractive\nindex (a condition attained either when \\mu= 0 or when \\epsilon= 0) is known to\ngive full reflectivity for all incident polarizations, here we show that a gap\ncorresponding to \\mu = 0 occurs only for TE polarized waves, whereas a gap\ncorresponding to \\epsilon = 0 occurs only for TM polarized waves. These band\ngaps are scale-length invariant and very robust against disorder, although they\nmay disappear for the particular case of propagation along the stratification\ndirection.",
    "arxiv_id": "physics/0606069",
    "authors": [
      "Ricardo A. Depine",
      "Maria L. Martinez Ricci",
      "Juan A. Monsoriu",
      "Enrique Silvestre",
      "Pedro Andres"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1016/j.physleta.2006.11.093",
    "journal_ref": "Phys. Lett. A 364, 352-355 (2007)",
    "title": "Zero permeability and zero permittivity band gaps in 1D metamaterial   photonic crystals",
    "url": "https://arxiv.org/abs/physics/0606069"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0092014a-efe5-42c3-a3df-9ccea7b276cc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}