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Linked atomic motions across an interface

Linked atomic motions across an interface. John C. Tully, Yale University, DMR 0520495.

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Linked atomic motions across an interface

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  1. Linked atomic motions across an interface John C. Tully, Yale University, DMR 0520495 We have discovered a new type of coupling mechanism that acts across the interface between two dissimilar materials. When the insulator SrTiO3 (STO) and the conducting and magnetic La0.47Sr0.53MnO3 (LSMO) are in intimate contact at an interface, the jiggling of the atoms in the STO propagates into the LSMO and modulates both its magnetism and electrical conductivity. STO LSMO Oxygen atoms in STO and LSMO form a continuous network of octahedra (red lines and triangular faces). The dashed line is the interface between STO and LSMO. The arrows illustrate the oscillations of the octahedra that couple the two materials across their interface. La or Sr O Sr Y. Segal, K. F. Garrity, C. A. F. Vaz, J. D. Hoffman, F. J. Walker, S. Ismail-Beigi, and C. H. Ahn, Yale Univ.

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