81 citations · 464 across the 22 of their papers we have counts for
22 papers
Evidence for Topological Band-to-Band Transitions in a Type-II Weyl Semimetal
Seyyedesadaf Pournia, Giriraj Jnawali, Samuel Linser +2
The ternary van der Waals material NbIrTe is a Type-II Weyl semimetal. We use a tunable circularly polarized mid-infrared laser to investigate the existence of band-to-band exc…
Band Structure and Polarization Effects in Photothermoelectric Spectroscopy of a Bi2Se3 Device
Seyyedesadaf Pournia, Giriraj Jnawali, Ryan F. Need +3
Bi2Se3 is a prototypical topological insulator which has a small band gap (~0.3 eV) and topologically protected conducting surface states. This material exhibits quite strong therm…
A Raman Probe of Phonons and Electron-phonon Interactions in NbIrTe4
Iraj Abbasian Shojaei, Seyyedesadaf Pournia, Congcong Le +6
The semimetal NbIrTe4 has been proposed to be a Type-II Weyl semimetal with 8 pairs of opposite Chirality Weyl nodes which are very close to the Fermi energy. This topological elec…
Ultrafast Photoinduced Band Splitting and Carrier Dynamics in Chiral Tellurium Nanosheets
Giriraj Jnawali, Yuan Xiang, Samuel M. Linser +10
Trigonal tellurium (Te) is a chiral semiconductor that lacks both mirror and inversion symmetries, resulting in complex band structures with Weyl crossings and unique spin textures…
Exploring the Band Structure of Wurtzite InAs Nanowires Using Photocurrent Spectroscopy
Seyyedesadaf Pournia, Samuel Linser, Giriraj Jnawali +8
We use polarized photocurrent spectroscopy in a nanowire device to investigate the band structure of hexagonal Wurtzite InAs. Signatures of optical transitions between four valence…
Strong Hot Carrier Effects Observed in a Single Nanowire Heterostructure
Iraj Abbasian Shojaei, Samuel Linser, Giriraj Jnawali +9
We use Transient Rayleigh Scattering to study the thermalization of hot photoexcited carriers in single GaAsSb/InP nanowire heterostructures. By comparing the energy loss rate in s…