26 research outputs found
Thermal regime defines oil and gas potentials in the Volga region
High-precision temperature logging conducted in deep and superdeep wells after restoring their thermal regimes have been used for drawing a temperature map of the central Volga region for a depth of 1000 m. The temperature survey has determined major thermal features of the region and outlined its oil and gas prospects. © 2010, European Association of Geoscientists and Engineers
Crystal Growth, Dynamic and Charge Transfer Properties of New Coronene Charge Transfer Complexes
© 2015 American Chemical Society. Two new coronene charge transfer complexes with F4-TCNQ of 2:1 and 1:1:1 (solvate with acetonitrile, MeCN) stoichiometry were obtained using crystal growth procedures from the solution and vapor phase. It was shown that mobility of coronene molecules in crystals is more affected by the asymmetry of its surrounding than by the composition and degree of charge transfer and interstack interactions. The combination of X-ray diffraction and electrochemistry in the solid state and a time-resolved one in solution allowed us to clarify the nucleation in solution showing that the formation of 2:1 coronene/F4-TCNQ complexes is thermodynamically preferable. The X-ray single crystal data for pristine coronene showed the crystal structure to be the same as at ambient temperature, raising doubt about the previously reported phase transitions at 140-180 K
Quasiparticle interference and strong electron-mode coupling in the quasi-one-dimensional bands of Sr2RuO4
The single-layered ruthenate SrRuO has attracted a great deal of
interest as a spin-triplet superconductor with an order parameter that may
potentially break time reversal invariance and host half-quantized vortices
with Majorana zero modes. While the actual nature of the superconducting state
is still a matter of controversy, it has long been believed that it condenses
from a metallic state that is well described by a conventional Fermi liquid. In
this work we use a combination of Fourier transform scanning tunneling
spectroscopy (FT-STS) and momentum resolved electron energy loss spectroscopy
(M-EELS) to probe interaction effects in the normal state of SrRuO. Our
high-resolution FT-STS data show signatures of the \beta-band with a distinctly
quasi-one-dimensional (1D) character. The band dispersion reveals surprisingly
strong interaction effects that dramatically renormalize the Fermi velocity,
suggesting that the normal state of SrRuO is that of a 'correlated
metal' where correlations are strengthened by the quasi 1D nature of the bands.
In addition, kinks at energies of approximately 10meV, 38meV and 70meV are
observed. By comparing STM and M-EELS data we show that the two higher energy
features arise from coupling with collective modes. The strong correlation
effects and the kinks in the quasi 1D bands may provide important information
for understanding the superconducting state. This work opens up a unique
approach to revealing the superconducting order parameter in this compound
Thermal regime defines oil and gas potentials in the Volga region
High-precision temperature logging conducted in deep and superdeep wells after restoring their thermal regimes have been used for drawing a temperature map of the central Volga region for a depth of 1000 m. The temperature survey has determined major thermal features of the region and outlined its oil and gas prospects. © 2010, European Association of Geoscientists and Engineers
Thermal regime defines oil and gas potentials in the Volga region
High-precision temperature logging conducted in deep and superdeep wells after restoring their thermal regimes have been used for drawing a temperature map of the central Volga region for a depth of 1000 m. The temperature survey has determined major thermal features of the region and outlined its oil and gas prospects. © 2010, European Association of Geoscientists and Engineers
Thermal regime defines oil and gas potentials in the Volga region
High-precision temperature logging conducted in deep and superdeep wells after restoring their thermal regimes have been used for drawing a temperature map of the central Volga region for a depth of 1000 m. The temperature survey has determined major thermal features of the region and outlined its oil and gas prospects. © 2010, European Association of Geoscientists and Engineers
Strain control of Fermiology and many-body interactions in two-dimensional ruthenates
Here we demonstrate how the Fermi surface topology and quantum many-body interactions can be manipulated via epitaxial strain in the spin-triplet superconductor Sr2RuO4 and its isoelectronic counterpart Ba2RuO4 using oxide molecular beam epitaxy, in situ angle-resolved photoemission spectroscopy, and transport measurements. Near the topological transition of the γ Fermi surface sheet, we observe clear signatures of critical fluctuations, while the quasiparticle mass enhancement is found to increase rapidly and monotonically with increasing Ru-O bond distance. Our work demonstrates the possibilities for using epitaxial strain as a disorder-free means of manipulating emergent properties, many-body interactions, and potentially the superconductivity in correlated materials.Publisher PDFPeer reviewe
Crystal Growth, Dynamic and Charge Transfer Properties of New Coronene Charge Transfer Complexes
© 2015 American Chemical Society. Two new coronene charge transfer complexes with F4-TCNQ of 2:1 and 1:1:1 (solvate with acetonitrile, MeCN) stoichiometry were obtained using crystal growth procedures from the solution and vapor phase. It was shown that mobility of coronene molecules in crystals is more affected by the asymmetry of its surrounding than by the composition and degree of charge transfer and interstack interactions. The combination of X-ray diffraction and electrochemistry in the solid state and a time-resolved one in solution allowed us to clarify the nucleation in solution showing that the formation of 2:1 coronene/F4-TCNQ complexes is thermodynamically preferable. The X-ray single crystal data for pristine coronene showed the crystal structure to be the same as at ambient temperature, raising doubt about the previously reported phase transitions at 140-180 K
Crystal Growth, Dynamic and Charge Transfer Properties of New Coronene Charge Transfer Complexes
© 2015 American Chemical Society. Two new coronene charge transfer complexes with F4-TCNQ of 2:1 and 1:1:1 (solvate with acetonitrile, MeCN) stoichiometry were obtained using crystal growth procedures from the solution and vapor phase. It was shown that mobility of coronene molecules in crystals is more affected by the asymmetry of its surrounding than by the composition and degree of charge transfer and interstack interactions. The combination of X-ray diffraction and electrochemistry in the solid state and a time-resolved one in solution allowed us to clarify the nucleation in solution showing that the formation of 2:1 coronene/F4-TCNQ complexes is thermodynamically preferable. The X-ray single crystal data for pristine coronene showed the crystal structure to be the same as at ambient temperature, raising doubt about the previously reported phase transitions at 140-180 K