TY - JOUR
KW - Mass spectrometry
KW - Heterostructures
KW - Atomic force microscopy
KW - Strontium alloys
KW - Surface termination
KW - Atomic layer
KW - Thermal-annealing
KW - SrTiO
KW - Chemical etching
KW - Flat terraces
KW - Interface engineering
KW - Ti-rich surface
KW - Time-of-flight mass spectroscopy
KW - Treatment process
KW - Unit cells
KW - Soil conservation
AU - A Biswas
AU - P.B Rossen
AU - C.-H Yang
AU - W Siemons
AU - M.-H Jung
AU - I.K Yang
AU - Ramamoorthy Ramesh
AU - Y.H Jeong
AB - We have studied the surface termination of atomically flat SrTiO 3 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 opens doors for interface engineering along the [110] and [111] directions in addition to a well known [100] case, which widens the range of functional heterostructures and interfaces. © 2011 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.3549860
LA - eng
M1 - 5
N1 - cited By 82
N2 - We have studied the surface termination of atomically flat SrTiO 3 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 opens doors for interface engineering along the [110] and [111] directions in addition to a well known [100] case, which widens the range of functional heterostructures and interfaces. © 2011 American Institute of Physics.
PY - 2011
T2 - Applied Physics Letters
TI - Universal Ti-rich termination of atomically flat SrTiO3 (001), (110), and (111) surfaces
VL - 98
SN - 00036951
ER -