(1) Freshman seminar: 14th May (Fri) 14:35-16:05 Building-B3, Room-303
"High Magnetic Fields and Low Temperatures;Why and How"
Abstract:
Recent advances in magnet technology has made possible to produce pulsed magnetic
fields as high as 100 T (tesla) and steady fields up to 45 T. Combining such high
magnetic fields with low temperatures, down to 20 mK (millikelvin), has led to
discoveries of many novel states of matter, particularly in superconductors and
a class of magnetic materials called antiferromagnets. I will give a brief overview
of how very high magnetic fields and low temperatures are produced and describe
examples of physical phenomena that are found in these extreme conditions,
illustrating why they are important in modern physics research.
(2) Undergraduate lecture for junior
(2-1) 19th May (Wed) 12:55-14:25 Building-A5, Room-306
"Introduction to Low Temperature Physics in High Magnetic Fields"
(2-2) 26th May (Wed) 12:55-14:25 Building-A5, Room-306
"Physics at Low temperatures and High Magnetic Fields"
(3) Graduate lecture for M1 and M2
(3-1) 17th May (Mon.) 14:35-16:05 Building-A13, Room-230
A supplemental lecture
(3-2) 24th May (Mon.) 14:35-16:05 Building-A13, Room-230
"Weiss model of Ferromagnet and Antiferromagnet"
(3-3) 31th May (Mon.) 14:35-16:05 Building-A13, Room-230
"Specific heat in orderd and disordered states"
(3-4) Open Seminar: 3rd June (Thu) 16:30- Science Hall (Building-A12)
"Cascade of magnetic-field-induced phases in a spin-1/2 triangular-lattice Heisenberg antiferromagnet"
Abstract:
Studies of antiferromagnets on a triangular lattice date back to the
pioneering theoretical work of Wannier, Houtappel, and Husimi and Syoji
from 1950. Despite the long history, this prototypical frustrated geometry
still harbors many surprises. I will review our recent high-magnetic-field
experiments on Cs2CuBr4, one of the best laboratory models for the
spin-1/2 Heisenberg antiferromagnet on a triangular lattice.