Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Benjamin Welber"'
Autor:
Benjamin Welber
Publikováno v:
Review of Scientific Instruments. 48:395-398
An optical system which makes it possible to obtain reflectance spectra of solids in the range of hydrostatic pressures 0–70 kilobar and higher is described. The system is used in conjunction with a diamond anvil pressure cell, and has a spectral r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58c833c88744b998e10b64231216723a
https://doi.org/10.1063/1.1135047
https://doi.org/10.1063/1.1135047
Autor:
Benjamin Welber
Publikováno v:
Review of Scientific Instruments. 47:183-186
We describe an optical system which has been used in conjunction with a high pressure diamond anvil cell to obtain absorption, reflectance, and photoluminescence spectra. The system is shown to yield useful results to pressures at least as high as 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbab24c925876ed113e9fd303758a7e3
https://doi.org/10.1063/1.1134586
https://doi.org/10.1063/1.1134586
Publikováno v:
Solid State Communications. 29:515-518
BiVO4 has a pure ferroelastic transition at Tc = 528°K and atmospheric pressure. We elucidated the mechanism of this transition by studying the q≈0 soft optical phonon, with the symmetry of the ferroelastic strain, under large hydrostatic pressure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0eb6af06915540a5e80227cec09f664
https://doi.org/10.1016/0038-1098(79)90347-8
https://doi.org/10.1016/0038-1098(79)90347-8
Publikováno v:
Physical Review B. 18:2692-2700
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0d975101c3326b7201f64783269356c
https://doi.org/10.1103/physrevb.18.2692
https://doi.org/10.1103/physrevb.18.2692
Publikováno v:
Physical Review B. 15:875-879
The dependence of the direct gap of germanium (${\ensuremath{\Gamma}}_{{25}^{\ensuremath{'}}}\ensuremath{\rightarrow}{\ensuremath{\Gamma}}_{{2}^{\ensuremath{'}}}$) on hydrostatic pressures up to 104 kbar has been measured. This dependence is found to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0072465d68b54d3cffa0d27e49345e2
https://doi.org/10.1103/physrevb.15.875
https://doi.org/10.1103/physrevb.15.875
Autor:
Benjamin Welber, A. Jayaraman
Publikováno v:
Journal of Applied Physics. 50:462-466
Pressure induced changes in the reflectivity of SmSe have been investigated up to 70 kbar hydrostatic pressure, using the gasketted diamond anvil high‐pressure x‐ray apparatus in conjunction with an optical microspectroscopic system. The effect o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81b4e069688f406b3202d275d887c168
https://doi.org/10.1063/1.325634
https://doi.org/10.1063/1.325634
Publikováno v:
Physical Review B. 19:730-741
Measurements are presented of the optical properties of the radical cation TT${\mathrm{F}}^{+}$ (tetrathiafulvalenium) in a variety of different conditions: as TT${\mathrm{F}}^{+}$ monomers in solution, as ${(\mathrm{T}\mathrm{T}{\mathrm{F}}^{+})}_{2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a1a964c2e5983233f7db8655031eb8e
https://doi.org/10.1103/physrevb.19.730
https://doi.org/10.1103/physrevb.19.730
Publikováno v:
Physical Review B. 12:5729-5738
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24af19bf40e9c9a5660e8637dbeed438
https://doi.org/10.1103/physrevb.12.5729
https://doi.org/10.1103/physrevb.12.5729
Autor:
Jerry B. Torrance, Bruce A. Scott, R. A. Craven, S. Etemad, Paul Chaikin, S. J. La Placa, Benjamin Welber, Yaffa Tomkiewicz
Publikováno v:
Physical Review B. 22:5599-5605
The x-ray crystal structure of the bromide salt of tetrathiafulvalene (TTF)-${\mathrm{Br}}_{0.79}$ shows incommensurate cation and anion sublattices, with a static modulation of each stack at the periodicity of the opposing stack. If the on-site Coul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::234011a449c76f7b288465d1f168739b
https://doi.org/10.1103/physrevb.22.5599
https://doi.org/10.1103/physrevb.22.5599
Publikováno v:
Solid State Communications. 32:151-155
Using the Raman technique we have studied the lattice vibrations of the prototype plastic crystal adamantane (C 10 H 16 ). The measurements, as a function of temperature through the phase transition (208K), show splittings in certain lines. At room t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fba810e0720b2768e075d3ac34771f0a
https://doi.org/10.1016/0038-1098(79)91077-9
https://doi.org/10.1016/0038-1098(79)91077-9