799 research outputs found
Superconducting fluctuations and the Nernst effect: A diagrammatic approach
We calculate the contribution of superconducting fluctuations above the
critical temperature to the transverse thermoelectric response
, the quantity central to the analysis of the Nernst effect. The
calculation is carried out within the microscopic picture of BCS, and to linear
order in magnetic field. We find that as , the dominant contribution
to arises from the Aslamazov-Larkin diagrams, and is equal to the
result previously obtained from a stochastic time-dependent Ginzburg-Landau
equation [Ussishkin, Sondhi, and Huse, arXiv:cond-mat/0204484]. We present an
argument which establishes this correspondence for the heat current. Other
microscopic contributions, which generalize the Maki-Thompson and density of
states terms for the conductivity, are less divergent as .Comment: 11 pages, 5 figure
SYNTHESIS OF CONDENSED NITROGEN-HETEROCYCLES BY CATALYTIC DEHYDROCYCLIZATION OF SUBSTITUTED PYRIDINES
Substituted pyridines - 1,2,5-Trimethyl-4-triphenylsilyl-4-piperidol and 2,5-dimethyl-4-triphenylsilylpyridine
1,2,5-Trimethyl-4-triphenylsilyl-4-piperidol was obtained and converted to 2,5-dimethyl-4-triphenylsilylpyridine. Several transformations of the isomeric piperidols isolated and of the substituted pyridines were examined. Β© 1973 Consultants Bureau
Synthesis of nitrogen-containing condensed heterocyclic compounds by catalytic dehydrocyclization of substituted pyridine bases (review)
Reactions involving the catalytic dehydrocyclization of synthetically accessible substituted pyridine bases, as a result of which condensed nitrogen-containing heterocyclic compounds containing three, four, and five rings are formed, are examined. Β© 1989 Plenum Publishing Corporation
Substituted pyridines - 1,2,5-Trimethyl-4-triphenylsilyl-4-piperidol and 2,5-dimethyl-4-triphenylsilylpyridine
1,2,5-Trimethyl-4-triphenylsilyl-4-piperidol was obtained and converted to 2,5-dimethyl-4-triphenylsilylpyridine. Several transformations of the isomeric piperidols isolated and of the substituted pyridines were examined. Β© 1973 Consultants Bureau
Synthesis of nitrogen-containing condensed heterocyclic compounds by catalytic dehydrocyclization of substituted pyridine bases (review)
Reactions involving the catalytic dehydrocyclization of synthetically accessible substituted pyridine bases, as a result of which condensed nitrogen-containing heterocyclic compounds containing three, four, and five rings are formed, are examined. Β© 1989 Plenum Publishing Corporation
SYNTHESIS OF CONDENSED NITROGEN-HETEROCYCLES BY CATALYTIC DEHYDROCYCLIZATION OF SUBSTITUTED PYRIDINES
ΠΠΠΠΠΠΠ‘Π’ΠΠΠ Π Π ΠΠΠ£ΠΠ¬Π’ΠΠ’Π« ΠΠΠ§ΠΠΠΠ― ΠΠΠ¨ΠΠ§ΠΠΠ ΠΠΠΠΠΠΠΠΠ¦ΠΠ Π£ ΠΠΠ’ΠΠ
- β¦