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VOLUME 33 (1981) | ISSUE 3 | PAGE 167
Twinning plane of a metallic crystal - a two-dimensional superconductor
Superconductivity of the (301) twinning plane of a tin crystal was observed at temperature Tc < Τ < Tc + 0.15 K. A new concept of a "two-dimensional metal," which is formed by the crystal lattice of the twinning plane, by a two-dimensional group of electrons moving parallel to the twinning plane, and by two-dimensional phonons of the twinning plane, is introduced to explain this effect.