This page gathers publications on crystal-phase quantum dots and nanowire heterostructures, including crystal-field effects, spontaneous polarization, antibonding states, and optical signatures specific to crystal-phase confinement.
This work shows that crystal-phase InP quantum dots can exhibit an unusual antibonding hole ground state, despite being defined within a single chemical material. It links this nonintuitive level ordering to the combined role of crystal-phase interfaces and weak strain neglected in simplified models.
Keywords: crystal-phase quantum dots
Main result: crystal-phase InP quantum dots may host an antibonding hole ground state, leaving a clear fingerprint in the excitonic spectrum. Even weak zinc-blende/wurtzite strain can qualitatively reshape the lowest hole states.
This work identifies crystal-field splitting and spontaneous polarization as key ingredients controlling the lowest hole states in InP crystal-phase quantum dots. It also emphasizes that additional electrostatic terms must be treated on equal footing with electron–hole interaction in atomistic excitonic calculations.
Keywords: crystal-phase quantum dots
Main result: crystal-field splitting and spontaneous polarization strongly modify the low-energy hole spectrum and optical transitions in crystal-phase quantum dots. Reliable modeling requires incorporating these effects directly into the many-body calculation.
This work helps interpret cascade-like optical emission from a single crystal-phase nanowire quantum dot, placing crystal-phase confinement in a realistic spectroscopic context. It connects the electronic structure of such dots with experimentally relevant excitonic recombination pathways.
Keywords: nanowire quantum dots, crystal-phase quantum dots
Main result: crystal-phase nanowire quantum dots can support excitonic emission pathways consistent with photon-cascade behavior. Their optical response is shaped by the distinct confinement physics of zinc-blende/wurtzite phase engineering.