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of 230
pro vyhledávání: '"Jackson, Howard E"'
The ternary van der Waals material NbIrTe$_4$ is a Type-II Weyl semimetal. We use a tunable circularly polarized mid-infrared laser to investigate the existence of band-to-band excitations using transient reflectivity in an exfoliated nanoflake and p
Externí odkaz:
http://arxiv.org/abs/2112.14814
Autor:
Pournia, Seyyedesadaf, Jnawali, Giriraj, Need, Ryan F., Jackson, Howard E., Wilson, Stephen D., Smith, Leigh M.
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 thermoelectric effects. Here we show in a mechanically exfoliated thick (~1
Externí odkaz:
http://arxiv.org/abs/2110.10799
Autor:
Shojaei, Iraj Abbasian, Pournia, Seyyedesadaf, Le, Congcong, Ortiz, Brenden R., Jnawali, Giriraj, Zhang, Fu-Chun, Wilson, Stephen D., Jackson, Howard E., Smith, Leigh M.
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 electronic structure is made possible because of the broken inversion symm
Externí odkaz:
http://arxiv.org/abs/2011.10848
Autor:
Jnawali, Giriraj, Xiang, Yuan, Linser, Samuel M., Shojaei, Iraj Abbasian, Wang, Ruoxing, Qiu, Gang, Lian, Chao, Wong, Bryan M., Wenzhuo, Wu, Ye, Peide D., Leng, Yongsheng, Jackson, Howard E., Smith, Leigh M.
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. Detailed time-resolved polarized reflectance spectroscopy is used to
Externí odkaz:
http://arxiv.org/abs/1910.10306
Autor:
Pournia, Seyyedesadaf, Linser, Samuel, Jnawali, Giriraj, Jackson, Howard E., Smith, Leigh M., Ameruddin, Amira, Caroff, Philippe, Wong-Leung, Jennifer, Tan, Hark Hoe, Jagadish, Chennupati, Joyce, Hannah J.
Publikováno v:
Nano Research 2020
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 bands and two conduction bands are observed which are consistent with
Externí odkaz:
http://arxiv.org/abs/1909.07488
Autor:
Shojaei, Iraj Abbasian, Linser, Samuel, Jnawali, Giriraj, Wickramasuriya, N., Jackson, Howard E., Smith, Leigh M., Kargar, Fariborz, Balandin, Alexander A., Yuan, Xiaoming, Caroff, Philip, Tan, H. Hoe, Jagadish, Chennupati
Publikováno v:
Nano Letters 19, 5062-5069 (2019)
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 single bare GaAsSb nanowires which do not show substantial hot carrier
Externí odkaz:
http://arxiv.org/abs/1810.12516
Autor:
Jnawali, Giriraj, Linser, Samuel, Shojaei, Iraj Abbasian, Pournia, Seyyedesadaf, Jackson, Howard E., Smith, Leigh M., Need, Ryan F., Wilson, Stephen D.
Bismuth selenide (Bi2Se3) is a prototypical three-dimensional topological insulator whose Dirac surface states have been extensively studied theoretically and experimentally. Surprisingly little, however, is known about the energetics and dynamics of
Externí odkaz:
http://arxiv.org/abs/1805.09381
Autor:
Wang, Yuda, Jackson, Howard E., Smith, Leigh M., Burgess, Tim, Paiman, Suriati, Gao, Qiang, Tan, Hark Hoe, Jagadish, Chennupati
Using transient Rayleigh scattering (TRS) measurements, we obtain photoexcited carrier thermalization dynamics for both zincblende (ZB) and wurtzite (WZ) InP single nanowires (NW) with picosecond resolution. A phenomenological fitting model based on
Externí odkaz:
http://arxiv.org/abs/1410.8601
Autor:
Joyce, Hannah J., Gao, Qiang, Hoe Tan, H., Jagadish, C., Kim, Yong, Zou, Jin, Smith, Leigh M., Jackson, Howard E., Yarrison-Rice, Jan M., Parkinson, Patrick, Johnston, Michael B.
Publikováno v:
In Progress in Quantum Electronics 2011 35(2):23-75
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