Normal Modes of a Semi-Infinite Ionic Crystal
Normal Modes of a Semi-Infinite Ionic Crystal is a scholarly work, published in 1969 in ''Physical Review''. The main subjects of the publication include Crystal, physics, eigenvectors and eigenvalues, quantum mechanics, quantum biology, atomic physics, boundary value problem, normal mode, degenerate energy level, Bessel function, bounded function, molecular electronics, and condensed matter physics. Optical surface modes are found whose limiting frequencies at infinite wavelength differ from those of the bulk LO and TO modes.