111 citations · 342 across the 5 of their papers we have counts for
5 papers
Carrier-Resolved Photo Hall Measurement in World-Record-Quality Perovskite and Kesterite Solar Absorbers
Oki Gunawan, Seong Ryul Pae, Douglas M. Bishop +8
Majority and minority carrier properties such as type, density and mobility represent fundamental yet difficult to access parameters governing semiconductor device performance, mos…
The Stability, Energetics, and Magnetic States of Cobalt Adatoms on Graphene
Yudistira Virgus, Wirawan Purwanto, Henry Krakauer +1
We investigate the stability and electronic properties of single Co atoms on graphene with near-exact many-body calculations. A frozen-orbital embedding scheme was combined with au…
A Diamagnetic Trap with 1D Camelback Potential
Oki Gunawan, Yudistira Virgus
The ability to trap matter is of great importance in experimental physics since it allows isolation and measurement of intrinsic properties of the trapped matter. We present a stud…
Ab Initio Many-body Study of Cobalt Adatoms Adsorbed on Graphene
Yudistira Virgus, Wirawan Purwanto, Henry Krakauer +1
Many recent calculations have been performed to study a Co atom adsorbed on graphene, with significantly varying results on the nature of the bonding. We use auxiliary-field quantu…
Assessing weak hydrogen binding on Ca+ centers: An accurate many-body study with large basis sets
Wirawan Purwanto, Henry Krakauer, Yudistira Virgus +1
Weak H2 physisorption energies present a significant challenge to even the best correlated theoretical many-body methods. We use the phaseless auxiliary-field quantum Monte Carlo (…