Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Crystalline Symmetry"”.
-
Wafer-scale integrated active silicon photonics for manipulation and conversion of light
… effects were missing in silicon due to its crystalline symmetry. The crystalline symmetry of silicon is broken with an applied DC field, generating second-order nonlinear susceptibility in CMOS compatible silicon photonics platform. The field induced second-order nonlinear effects are …
-
On the topological properties of the vibrations of solids
… the number of phonon bands and the intrinsic crystalline symmetry, the topological invariant carried by the band crossing can either be an integer number for a two-band subspace or an non-Abelian frame charge when at least three bands are involved. The phonon band crossing formed in a two-band …
-
Crystalline Topological Invariants in Invertible Fermionic States and Fractional Chern Insulators
… insulators or fractional Chern insulators with crystalline symmetry. The first part of this dissertation establishes the necessary theoretical background, defining symmetry operators, geometrical measures, and topological actions used to determine crystalline topological invariants. The second …
-
Self-assembly of amino acids on noble metal surfaces : morphological, chemical and electronic control of matter at the nanoscale
… methionine and tyrosine amino acids on the monocrystalline Ag(111) and Cu(111) surfaces are characterized by means of scanning tunneling microscopy (STM) and spectroscopy (STS), helium atom scattering (HAS), x-ray photoelectron spectroscopy (XPS) and near-edge x-ray absorption fine structure …
-
Crystalline-electromagnetic responses of topological semimetals and insulators
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
-
Explorations of domain walls and half quantum vortices in unconventional superconductors
… may exibit spontaneously broken time reversal symmetry. Triplet superconductors have been proposed to host half quantum vortices, whereas superconductors with spontaneously broken time-reversal symmetry are proposed to admit domain walls that separate regions of opposing chirality. Thus--in …