222 citations · 282 across the 6 of their papers we have counts for
6 papers
How Correlated Adsorbate Dynamics on Realistic Substrates Can Give Rise to 1/ω Electric-Field Noise in Surface Ion Traps
Benjamin Foulon, Keith G. Ray, Chang-Eun Kim +3
Ion traps are promising architectures for implementing scalable quantum computing, but they suffer from excessive "anomalous" heating that prevents their full potential from being…
Changes in electric-field noise due to thermal transformation of a surface ion trap
Maya Berlin-Udi, Clemens Matthiesen, P. N. Thomas Lloyd +9
We aim to illuminate how the microscopic properties of a metal surface map to its electric-field noise characteristics. In our system, prolonged heat treatments of a metal film can…
Anharmonicity in the high-temperature Cmcm phase of SnSe: soft modes and three-phonon interactions
Jonathan M. Skelton, Lee A. Burton, Stephen C. Parker +8
The layered semiconductor SnSe is one of the highest-performing thermoelectric materials known. We demonstrate, through a first-principles lattice-dynamics study, that the high-tem…
Unraveling the origins of conduction band valley degeneracies in Mg2Si-1xSnx thermoelectrics
Chang-Eun Kim, Aloysius Soon, Catherine Stampfl
To better understand and enhance the thermoelectric efficiency of a new class of Mg-based thermoelectrics, using hybrid density-functional theory, we study the microscopic origins…
Solid-state chemistry of glassy antimony oxides
Chang-Eun Kim, Jonathan M. Skelton, Aron Walsh +1
The amorphous phases of antimony oxide at three different oxidation levels have been investigated by {\it ab initio} molecular-dynamics calculations using a simulated `melt-quench'…
Re-visiting the O/Cu(111) system -- When metastable surface oxides could become an issue!
Norina. A. Richter, Chang-Eun Kim, Catherine Stampfl +1
Surface oxidation processes are crucial for the functionality of Cu-based catalytic systems used for methanol synthesis, partial oxidation of methanol or the water-gas shift reacti…