Details

Autor(en) / Beteiligte

• Dai, Weitao
• Adhikari, Sanjay
• Garcia-Castro, Andrés Camilo
• Romero, Aldo H
• Lee, Hyungwoo
• Lee, Jung-Woo
• Ryu, Sangwoo
• Eom, Chang-Beom
• Cen, Cheng

Titel

Tailoring LaAlO3/SrTiO3 Interface Metallicity by Oxygen Surface Adsorbates

Ist Teil von

• Nano letters, 2016-04, Vol.16 (4), p.2739-2743

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report an oxygen surface adsorbates induced metal–insulator transition at the LaAlO3/SrTiO3 interfaces. The observed effects were attributed to the terminations of surface Al sites and the resultant electron-accepting surface states. By controlling the local oxygen adsorptions, we successfully demonstrated the nondestructive patterning of the interface two-dimensional electron gas (2DEG). The obtained 2DEG structures are stable in air and also robust against general solvent treatments. This study provides new insights into the metal–insulator transition mechanism at the complex oxide interfaces and also a highly efficient technique for tailoring the interface properties.