Browsing by Author "8c87752e-83c0-4d02-b614-9c50cca0e5c7"

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REVEALING ELECTROMIGRATION ON DIELECTRICS AND METALS THROUGH THE STEP-BUNCHING INSTABILITY

Usov, Victor; Ó Coileáin, Cormac; Chaika, Alexander N.; Bozhko, Sergey I.; Semenov, Valery N.; Krasnikov, Sergey; Toktarbaiuly, Olzat; Stoyanov, Stoyan; Shvets, Igor V. (PHYSICAL REVIEW B, 2020)

Electromigration, due to its technological and scientific significance, has been a subject of extensive studies for many years. We present evidence of electromigration in dielectric materials, namely C -plane sapphire, ...
Step bunching with both directions of the current: Vicinal W(110) surfaces versus atomistic-scale model

Toktarbaiuly, Olzat; Usov, Victor; Ó Coileáin, Cormac; Siewierska, Katarzyna; Krasnikov, Sergey; Norton, Emma; Bozhko, Sergey I.; Semenov, Valery N.; Chaika, Alexander N.; Murphy, Barry E.; Lübben, Olaf; Krzy˙zewski, Filip; Załuska-Kotur, Magdalena A.; Krasteva, Anna; Popova, Hristina; Tonchev, Vesselin; Shvets, Igor V. (Physical review B, 2018-01)

We report the observation of bunching of monoatomic steps on vicinal W(110) surfaces induced by step-up or step-down currents across the steps. Measurements reveal that the size-scaling exponent γ , connecting the maximal ...