167 citations · 967 across the 37 of their papers we have counts for
18 papers · 1 filter
Intrinsic Negative-U Centers in Freestanding LaAlO3/SrTiO3 Micro-membranes
Giulia Meucci, Pinelopi O. Konstantinopoulou, Thies Jansen +15
The LaAlO3/SrTiO3 (LAO/STO) interface hosts a rich range of electronic phenomena, including unconventional electron pairing that in quantum dots gives rise to a negative effective…
Irreversible multi-band effects and Lifshitz transitions at the LaAlO3/SrTiO3 interface under field effect
Ilaria Pallecchi, Nicolo' Lorenzini, Mian Akif Safeen +4
In this work, we investigate the irreversible effects of an applied electric field on the magnetotransport properties of LaAlO3/SrTiO3 conducting interfaces, with focus on their mu…
Orbital selective switching of ferromagnetism in an oxide quasi two-dimensional electron gas
R. Di Capua, M. Verma, M. Radovic +16
Multi-orbital physics in quasi-two-dimensional electron gases (q2DEGs) triggers unique phenomena not observed in bulk materials, such as unconventional superconductivity and magnet…
Self-formed Micro-Membranes
Alessia Sambri, Mario Scuderi, Anita Guarino +13
Oxide heterostructures represent a unique playground for triggering the emergence of novel electronic states and for implementing new device concepts. The discovery of 2D conductiv…
Electronic phase separation at LaAlO3/SrTiO3 interfaces tunable by oxygen deficiency
V. N. Strocov, A. Chikina, M. Caputo +7
Electronic phase separation is crucial for the fascinating macroscopic properties of the LaAlO3/SrTiO3 (LAO/STO) paradigm oxide interface, including the coexistence of superconduct…
Symmetry breaking at the (111) interfaces of SrTiO hosting a 2D-electron system
G. M. De Luca, R. Di Capua, E. Di Gennaro +7
We used x-ray absorption spectroscopy to study the orbital symmetry and the energy band splitting of (111) LaAlO/SrTiO and LaAlO/EuTiO/SrTiO heterostr…
Infrared study of the quasi-two-dimensional electron system at the interface between SrTiO and crystalline or amorphous LaAlO
A. Nucara, M. Corasaniti, A. Kalaboukhov +9
We have used grazing-angle infrared spectroscopy to detect the Berreman effect (BE) in the quasi-two-dimensional electron system (q-2DES) which forms spontaneously at the interface…
Ultrafast Modification of the Polarity at LaAlO/SrTiO Interfaces
Andrea Rubano, Tim Günter, Manfred Fiebig +3
Oxide growth with semiconductor-like accuracy has led to atomically precise thin films and interfaces that exhibit a plethora of phases and functionalities not found in the oxide b…
Octahedral rotation patterns in strained EuFeO3 and other Pbnm perovskite films: Implications for hybrid improper ferroelectricity
A. K. Choquette, C. R. Smith, R. J. Sichel-Tissot +6
We report the relationship between epitaxial strain and the crystallographic orientation of the in-phase rotation axis and A-site displacements in Pbnm-type perovskite films. Synch…
Growth and characterization of conducting LaAlO3/EuTiO3/SrTiO3 het-erostructures
G. M. De Luca, R. Di Capua, E. Di Gennaro +9
We studied the structural, magnetic and transport properties of LaAlO3/EuTiO3/SrTiO3 heterostructures grown by Pulsed Laser Deposition. The samples have been characterized in-situ…
Reversible and Persistent Photoconductivity at the NdGaO3/SrTiO3 Conducting Interface
Umberto Scotti di Uccio, Carmela Aruta, Claudia Cantoni +10
The interface between the band gap insulators LaAlO3 and SrTiO3 is known to host a highly mobile two-dimensional electron gas. Here we report on the fabrication and characterizatio…
Observation of a two-dimensional electron gas at the surface of annealed SrTiO3 single crystals by scanning tunneling spectroscopy
R. Di Capua, M. Radovic, G. M. De Luca +7
Scanning tunneling spectroscopy suggests the formation of a two dimensional electron gas (2DEG) on the TiO2 terminated surface of undoped SrTiO3 single crystals annealed at tempera…
In-situ Investigation of the Early Stage of TiO2 epitaxy on (001) SrTiO3
M. Radovic, M. Salluzzo, Z. Ristic +4
We report on a systematic study of the growth of epitaxial TiO2 films deposited by pulsed laser deposition on Ti-terminated (001) SrTiO3 single crystals. By using in-situ reflectio…
Pulsed laser deposition of SrTiO3/LaGaO3 and SrTiO3/LaAlO3: plasma plume effects
C. Aruta, S. Amoruso, R. Bruzzese +4
Pulsed laser deposition of SrTiO3/LaGaO3 and SrTiO3/LaAlO3 interfaces has been analyzed with a focus on the kinetic energy of the ablated species. LaGaO3 and LaAlO3 plasma plumes w…
Magnetic properties of pseudomorphic epitaxial films of Pr_{0.7}Ca_{0.3}MnO_3 under different biaxial tensile stresses
A. Geddo Lehmann, F. Congiu, N. Lampis +4
In order to analyse the effect of strain on the magnetic properties of narrow-band manganites, the temperature and field dependent susceptibilities of about 8.5 nm thick epitaxial…
Conducting interfaces between band insulating oxides: the LaGaO3/SrTiO3
Paolo Perna, Davide Maccariello, Milan Radovic +9
We show that the growth of the heterostructure LaGaO3/SrTiO3 yields the formation of a highly conductive interface. Our samples were carefully analyzed by high resolution electron…
Polar catastrophe and electronic reconstructions at the LaAlO3/SrTiO3 interface: evidence from optical second harmonic generation
A. Savoia, D. Paparo, P. Perna +8
The so-called "polar catastrophe", a sudden electronic reconstruction taking place to compensate for the interfacial ionic polar discontinuity, is currently considered as a likely…
Time-resolved photoluminescence of n-doped SrTiO_3
A. Rubano, D. Paparo, M. Radovic +4
Following the recent surge of interest in n-doped strontium titanate as a possible blue light emitter, a time-resolved photoluminescence analysis was performed on nominally pure, N…