JT 2012 was held at Tsukuba campus of University of Tsukuba.

Proceedings of JT2012


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Like the Minano River

surging from the peak

of Mt. Tsukuba,

my love cascades

to make deep pool

below the falls.


by Yozei In (the 57th Emperor, 868-949)

a waka poem from an anthology, “One hundred people, one poem each (Hyakuninn Isshu) '' compiled by Fujiwara no Teika (1162-1241); translation by Peter McMillan

Mt. Tsukuba was a meeting place for men and women about 1,000 years ago, where singing, dancing, and reciting of poetry would occur, in celebration of the beginning of spring or autumn.


Today, the city of Tsukuba is a meeting place for science and technology, and for academics and industries. It is located about 50 km northeast of Tokyo. There are more than 300 public and private research institutes, universities and firms.

The XXIst International Symposium on the Jahn-Teller Effect will be held at University of Tsukuba. We expect a lot of meetings; a meeting of Chemistry and Physics, of Theory and Experiment, and of course, of People from the world.

In this symposium, we will deal with systems in which both electronic degrees of freedom and nuclear motions of molecules or lattice distortions in solids are important. Topics that will be covered are

  1. Cuprate and Iron-pnictide superconductors
  2. C60 and other organic superconductors
  3. Ferroelectric and multiferroic compounds
  4. Cooperative Jahn-Teller effect and orbital ordering
  5. Optical and spectroscopic properties of vibronic systems
  6. Conical intersections and chemical reactions
  7. Advances in mathematical and numerical methods
  8. Magnetism and Jahn-Teller effect


We will also have a special session for the Ligand Field Theory with inviting Yukito Tanabe, Satoru Sugano, and Hiroshi Kamimura.

It is noteworthy that the 1986 discovery of the high-Tc cuprate superconductor was motivated by the strong vibronic interaction exists in the cuprate as a Jahn-Teller system; and that the quantum geometric phase and appearance of gauge structure in molecules and solids were first recognized in the context of the dynamical Jahn-Teller problem in the E×e system.

We will expect further breakthroughs and new findings from this field of science. We are looking forward to your taking part in this symposium.