Browsing by Author "Dey, Sonal"

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Role of Ge and Si substrates in higher-k tetragonal phase formation and interfacial properties in cyclical atomic layer deposition-anneal Hf1-xZrxO2/Al2O3 thin film stacks

Dey, Sonal; Tapily, Kandabara; Consiglio, Steven; Clark, Robert D.; Wajda, Cory S.; Leusink, Gert J.; Woll, Arthur R.; Diebold, Alain C. (Journal of Applied Physics, 2016)

Using a five-step atomic layer deposition (ALD)-anneal (DADA) process, with 20 ALD cycles of metalorganic precursors followed by 40 s of rapid thermal annealing at 1073 K, we have developed highly crystalline Hf1-xZrxO2 ...
Surface oxidation of the topological insulator Bi2Se3

Green, Avery J.; Dey, Sonal; An, Yong Q.; O'Brien, Brendan; O'Mullane, Samuel; Thiel, Bradley; Diebold, Alain C. (Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 2016)

An understanding of the aging and oxidation of the (0001) surface of Bi2Se3 is critical to a comprehensive physical picture of its topologically protected surface states. Here, the authors contribute new experimental ...