Enhancing electron mobility at the LaAlO₃ /SrTiO₃ interface by surface control.

Xie, Yanwu; Bell, Christopher; Hikita, Yasuyuki; Harashima, Satoshi; Hwang, Harold Y · Adv Mater · 2013

basic_science · Level V

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Abstract

Mobility of electrons confined at the LaAlO₃ /SrTiO₃ interface is significantly enhanced by surface control using surface charges and adsorbates, reaching a low temperature value more than 20 000 cm(2) V(-1) s(-1) . A uniform trend that mobility increases with decreasing sheet carrier density is observed.