Patent ID: 8409984

Claim:
A method of forming an array of multi-component oxide heterostructures, the method comprising: exposing a substrate comprising a SrTiO 3 top layer to a digital beam in a first chamber, the first chamber comprising a focused ion beam to introduce site specific surface nucleation and to generate a density of oxygen vacancies; moving the exposed substrate into a second chamber to induce thermal activation of said substrate; moving the thermally activated substrate into a third chamber; introducing a lanthanum containing precursor into the third chamber; introducing an aluminum containing precursor into the third chamber; and controlling the introducing of the lanthanum containing precursor and the introducing of the aluminum containing precursor to form by patterned atomic layer deposition a dielectric layer comprising LaAlO 3 having a thickness of 2 to 4 unit cells to form a well-defined high density array of multi-component oxide heterostructures.