University
of Toronto
Physics Department
Quantum Optics and Condensed Matter
MONDAY SEMINAR
University
of Toronto
MONDAY SEMINAR
| Speaker : | PROF. SHAUL GOREN
Dept. of Physics Ben Gurion University Beer-Sheeva, Israel. |
| Topic : | "Incorporating Halogens into the Cuprates" |
| Time : | Monday, March 6, 2000 at 12:10 p.m. |
| Place : | Room 408, Burton Tower 60 St. George Street / 255 Huron Street |
Abstract
It was shown that doping the 123 systems with halogens can increase
Tc up to 92K if the starting system was underdoped and even restore
the superconducting state if the starting system was in the magnetically
ordered state. We have used NMR, NQR and ESR techniques ton examine in
details the F-YBCO system and have shown that the fluorine atoms incorporate
into system. The case of chlorine is not a clear cut case while bromine
and iodine do not incorporate into the system but decompose it. The use
of fluorine as an NMR probe of the superconducting state is discussed.
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