41 citations · 157 across the 12 of their papers we have counts for
9 papers · 1 filter
Non-equilibrium hot-carrier transport in type-II multiple-quantum wells for solar-cell applications
H. P. Piyathilaka, R. Sooriyagoda, V. R. Whiteside +4
Prototypes for hot-carrier solar cells based on type-II InAs/AlAsSb multiple quantum wells are examined for AC photoconductivity as a function of lattice temperature and photoexcit…
Wigner solids of domain wall skyrmions
Kaifeng Yang, Katsumi Nagase, Yoshiro Hirayama +3
Detection and characterization of a different type of topological excitations, namely the domain wall (DW) skyrmion, has received increasing attention because the DW is ubiquitous…
Pump-probe nuclear spin relaxation study of the quantum Hall ferromagnet at filling factor nu = 2
K. F. Yang, M. M. Uddin, K. Nagase +5
The nuclear spin-lattice relaxation time T1 of the nu = 2 quantum Hall ferromagnet (QHF) formed in a gate-controlled InSb two-dimensional electron gas has been characterized using…
In-Plane Magnetoconductance Mapping of InSb Quantum Wells
J. T. Mlack, K. S. Wickramasinghe, T. D. Mishima +2
In-plane magnetoconductance of InSb quantum wells (QW) containing a two dimensional electron gas (2DEG) is presented. Using a vector magnet, we created a magnetoconductance map whi…
Role of chiral quantum Hall edge states in nuclear spin polarization
K. F. Yang, K. Nagase, Y. Hirayama +3
Resistively detected NMR (RDNMR) based on dynamic nuclear polarization (DNP) in a quantum Hall ferromagnet (QHF) is a highly-sensitive method for the discovery of fascinating quant…
Gate depletion of an InSb two-dimensional electron gas
M. M. Uddin, H. W. Liu, K. F. Yang +6
We investigated the gate control of a two-dimensional electron gas (2DEG) confined to InSb quantum wells with an Al2O3 gate dielectric formed by atomic layer deposition on a surfac…