Sunday, December 25, 2016

High Tc superconductivity in n-alkanes above 231 C

Super conductivity with critical temperature of 231 C for n-alkanes containing n=16 or more carbon atoms in presence of graphite has been reported (see this).

Alkanes (see this) can be linear (CnH2n+2) with carbon backbone forming a snake like structure, branched (CnH2n+2, n > 2) in which carbon backbone splits in one, or more directions or cyclic (CnH2n) with carbon backbone forming a loop. Methane CH4 is the simplest alkane.

What makes the finding so remarkable is that alkanes serve as basic building bricks of organic molecules. For instance, cyclic alkanes modified by replacing some carbon and hydrogen atoms by other atoms or groups form aromatic 5-cycles and 6-cycles as basic building bricks of DNA. I have proposed that aromatic cycles are superconducting and define fundamental and kind of basic units of molecular consciousness and in case of DNA combine to a larger linear structure.

Organic high Tc superconductivity is one of the basic predictions of quantum TGD. The mechanism of super-conductivity would be based on Cooper pairs of dark electrons with non-standard value of Planck constant heff=n×h implying quantum coherence is length scales scaled up by n (also bosonic ions and Cooper pairs of fermionic ions can be considered).

The members of dark Cooper pair would reside at parallel magnetic flux tubes carrying magnetic fields with same or opposite direction: for opposite directions one would have S=0 and for the same direction S=1. The cyclotron energy of electrons proportional to heff would be scaled up and this would scale up the binding energy of the Cooper pair and make super-conductivity possible at temperatures even higher than room tempeture (see this).

This mechanism would explain the basic qualitative features of high Tc superconductivity in terms of quantum criticality. Between gap temperature and Tc one one would have superconductivity in short scales and below Tc superconductivity in long length scales. These temperatures would correspond to quantum criticality at which large heff phases would emerge.

What could be the role of graphite? The 2-D hexagonal structure of graphite is expected to be important as it is also in the ordinary super-conductivity: perhaps graphite provides long flux tubes and n-alkanes provide the Cooper pairs at them. Either graphite, n-alkane as organic compound, or both together could induce quantum criticality. In living matter quantum criticality would be induced by different mechanism. For instance, in microtubules it would be induced by AC current at critical frequencies.

For background and for links to TGD inspired work related to super-conductivity see the article New findings about high-temperature super-conductors.

For a summary of earlier postings see Latest progress in TGD.

Articles and other material related to TGD.

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