Round 3: Tossup 15

If the transfer integral of these particles is small, the repulsion between them can lead to the Mott transition. If these particles are “nearly free” but weakly interact with a periodic potential, Bloch’s theorem (10[1])can be used to compute their band structure. Superconductivity (10[1])is caused by bound pairs of these particles (10[1])theorized (10[1])by Leon Cooper. (10[1])Places in a lattice (10[1])where these particles (10[1])don’t exist are called holes. (10[3])If a photon’s energy exceeds a material’s work function, it can eject one of these particles (10[1])in an effect whose (10[1])description won Albert Einstein the Nobel Prize. For 10 points, name these negatively-charged particles whose orbitals surround the nuclei of atoms. ■END■

Back to tossups

Buzzes

Summary