|SUPERSTRIPES NEWS Vol. 1, No. 3 March, 2001
Hot Session at APS on MgB2
There was a bias towards the BCS mechanism for high Tc superconductivity (HTcS). With the opposition of few, the majority of scientific community has focused on search for exotic mechanisms of HTcS out of the BCS scheme. On Monday, March 12, 2001 in Seattle during a long night session - from 8:00 PM to 1:30 AM - at the American Physical Society meeting, 70 scientific reports have been presented on the novel high Tc superconductor: MgB2. This simple and cheap material cancelled a scientific prejudice: all scientific reports agree that the BCS scheme works well above the limit of 23K. Now the experimental research is pushed towards the discovery of other HTcS materials in the hope that MgB2 is only the tip of an iceberg of a novel family of high Tc superconductors.
When on Sept 26, 2000, at the STRIPES2000 conference, the universal phase diagram for the ceramic cuprate superconductors has showed that in the family of cuprates the top of the mountain (Tc=150K) was already reached, some scientists said that it will take more than 10 years to find another family of HTcS materials as interesting as cuprates. On the contrary it has taken only 106 days: on Jan 10, 2001, Jun Akimitsu reported HTcS in MgB2 opening a new field in material science research. The road map for material science is now towards novel metallic heterostructures at the atomic limit, where the lattice structure and the charge density are tuned to a particular point pushing Tc to high temperature.
At Seattle it was pointed out that the new HTcS superconductor, MgB2, made of cheap metallic elements with high charge density has high technological interest.
See the web pages on this topic:
1) the picture gallery of the APS Seattle Postdeadline Session on MgB2
2) the abstracts, view graphs and the audio, of the papers presented at APS Seattle Session on MgB2
3) the data bank of papers on borides
4) the patents on heterostructures at the atomic limit for high Tc amplification
1- The proceedings of Stripes2000 has been published as a special volume by Intern.Journal of Modern Physics, Vol.14 No. 29,30,31. The index of all contributions can be found on the web page superstripes.com, clicking on "Conferences" button, then on "Stripes2000" and "Proceedings" buttons.
2- The book of Abstracts of the third international conference "Stripes and High Temperature superconductivity" will be mailed free of charges if requested by e-mail.
3- The comments and information on stripes can be mailed to email@example.com
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