2011
DOI: 10.1063/1.3549860
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Abstract: We have studied the surface termination of atomically flat SrTiO3 surfaces treated by chemical etching and subsequent thermal annealing, for all commercially available orientations (001), (110), and (111). Atomic force microscopy confirms that our treatment processes produce unit cell steps with flat terrace structures. We have also determined the topmost atomic layer of SrTiO3 surfaces through time-of-flight mass spectroscopy. We found that all three orientations exhibit a Ti-rich surface. Our observation ope… Show more

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Cited by 118 publications
(102 citation statements)
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“…20, [22][23][24][25] Owing to the safety issues of acidic etchants, these acid-based methods have been a barrier against promoting active research of novel interfacial properties of complex oxides.…”
mentioning
confidence: 99%
“…20, [22][23][24][25] Owing to the safety issues of acidic etchants, these acid-based methods have been a barrier against promoting active research of novel interfacial properties of complex oxides.…”
mentioning
confidence: 99%
“…where¯, k, and T are the atomic vibration frequency (³10 13 ), Boltzmann constant, and temperature, respectively. Figure 6 shows dependence of the¸calculated from Eq.…”
Section: Resultsmentioning
confidence: 99%
“…After growth, all films were cooled down slowly ($7 C/min) in same oxygen partial pressure to compensate for any oxygen deficiency. All the substrates, SrTiO 3 (001), (LaAlO 3 ) 0.3 (Sr 2 TaAlO 6 ) 0.7 (001), and LaAlO 3 (001) crystals, were treated prior to growth to produce atomically flat surfaces 20,21 (Henceforth these substrates will be designated as STO, LSAT, and LAO). X-ray diffraction (XRD) measurements were performed by the Empyrean XRD System from PANalytical.…”
Section: Experimental Methodsmentioning
confidence: 99%