講演会のお知らせ 　(1/26：Prof. Stephen Dugdale (H.H. Wills Physics Laboratory, University of Bristol, UK))

演題：Life on the edge: electrons on the Fermi surface
講師：Prof. Stephen Dugdale(H.H. Wills Physics Laboratory, University of Bristol, UK))
日時：１月２６日（金）　１６：２０〜
場所：コラボレーション棟３階　コラボレーション室
概要：
　Our current understanding of what distinguishes a metal is the existence of a Fermi surface. Indeed, it is the Fermi surface which characterizes the dynamical properties of electrons. So important is knowing the shape of the Fermi surface, that many elegant probes have been developed to reveal it. The electron momentum distribution contains information about the ground-state wave functions of the electrons in a material, and about the occupation of those states. Positron annihilation and high-resolution Compton scattering can be used to probe that momentum distribution, and determine the Fermi surface of bulk materials.
　In my talk, I will discuss some very different materials (including SmB6 and some Heusler alloys) for which our measurements have been able to give new insight into their properties by advancing the understanding of their electronic structure.

連絡先：物理学科　鄭　国慶（内線7813）