Superconductivity of Non-Strained PbTe-PbS and Strained PbTe-SnTe Superlattices

Seebeck effect in PbTe films and EuTe/PbTe superlattices

Morphology control of nanostructures: Na-doped PbTe-PbS system.

The morphology of crystalline precipitates in a solid-state matrix is governed by complex but tractable energetic considerations driven largely by volume strain energy minimization and anisotropy of interfacial energies. Spherical precipitate morphologies are favored by isotropic systems, while anisotropic interfacial energies give energetic preference to certain crystallographically oriented i...

Phase relations in the system PbS-PbSe-PbTe

Phase relations in the system P b S P b S e P b T e were investigated in the temperature range between 1150 and 300~ There is a complete solid solution series along the join PbS-PbSe, whereas miscibility gaps exist below ~ 350~ and 805~ along joins PbSe-PbTe and PbS-PbTe, respectively. Both gaps extend into the ternary system, and the range of the gap between PbS and PbTe reduces in size with t...

Phonon self-energy and origin of anomalous neutron scattering spectra in SnTe and PbTe thermoelectrics.

The anharmonic lattice dynamics of rock-salt thermoelectric compounds SnTe and PbTe are investigated with inelastic neutron scattering (INS) and first-principles calculations. The experiments show that, surprisingly, although SnTe is closer to the ferroelectric instability, phonon spectra in PbTe exhibit a more anharmonic character. This behavior is reproduced in first-principles calculations o...

Impurity clustering and impurity-induced bands in PbTe-, SnTe-, and GeTe-based bulk thermoelectrics

Khang Hoang,1 S. D. Mahanti,2 and Mercouri G. Kanatzidis3,4 1Materials Department, University of California, Santa Barbara, California 93106, USA 2Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA 3Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA 4Materials Science Division, Argonne National Laboratory, Argonne, Illi...