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7 papers · 2 filters
Surface Energetics of Alkaline-Earth Metal Oxides: Trends in Stability and Adsorption of Small Molecules
Michal Bajdich, Jens K. Nørskov, Aleksandra Vojvodic
We present a systematic theoretical investigation of the surface properties, stability and reactivity, of rock-salt type alkaline-earth metal oxides including MgO, CaO, SrO, and Ba…
On the Origin and Implications of LiO Toroid Formation in Nonaqueous Li-O Batteries
Nagaphani B. Aetukuri, Bryan D. McCloskey, Jeannette M. García +3
The lithium-air (Li-O) battery has received enormous attention as a possible alternative to current state-of-the-art rechargeable Li-ion batteries given their high theoretical…
Insights into carbon nanotube nucleation: Cap formation governed by catalyst interfacial step flow
Rahul Rao, Renu Sharma, Frank Abild-Pedersen +2
In order to accommodate an increasing demand for carbon nanotubes (CNTs) with desirable characteristics one has to understand the origin of helicity of their structures. Here, thro…
Quantum longitudinal and Hall transport at the LaAlO3/SrTiO3 interface at low electron densities
Yanwu Xie, Christopher Bell, Minu Kim +3
We examined the magneto-transport behavior of electrons confined at the conducting LaAlO3/SrTiO3 interface in the low sheet carrier density regime. We observed well resolved Shubni…
Ultrafast Electron Dynamics in the Topological Insulator Bi2Se3 Studied by Time-Resolved Photoemission Spectroscopy
Jonathan A. Sobota, Shuolong Yang, Dominik Leuenberger +6
We characterize the topological insulator BiSe using time- and angle- resolved photoemission spectroscopy. By employing two-photon photoemission, a complete picture of the…
Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2
Yi Zhang, Tay-Rong Chang, Bo Zhou +13
Quantum systems in confined geometries are host to novel physical phenomena. Examples include quantum Hall systems in semiconductors and Dirac electrons in graphene. Interest in su…