97 citations · 354 across the 17 of their papers we have counts for
17 papers
Characterization of band offsets in AlInAsSb alloys with varying Al composition
Jiyuan Zheng, Andrew H. Jones, Yaohua Tan +7
The unprecedented wide bandgap tunability (~1 eV) of AlInAsSb latticed-matched to GaSb enables the fabrication of photodetectors over a wide range from near…
Full band Monte Carlo simulation of AlInAsSb digital alloys
Jiyuan Zheng, Sheikh Z. Ahmed, Yuan Yuan +7
Avalanche photodiodes fabricated from AlInAsSb grown as a digital alloy exhibit low excess noise. In this paper, we investigate the band structure-related mechanisms that influence…
Enhanced Room Temperature Infrared LEDs using Monolithically Integrated Plasmonic Materials
Andrew F. Briggs, Leland Nordin, Aaron J. Muhowski +6
Remarkable systems have been reported recently using the polylithic integration of semiconductor optoelectronic devices and plasmonic materials exhibiting epsilon-near-zero (ENZ) a…
Ballistic Metamaterials
Kun Li, Evan Simmons, A. F. Briggs +4
The interaction of free electrons with electromagnetic excitation is the fundamental mechanism responsible for ultra-strong confinement of light that, in turn, enables biosensing,…
The Carbon State in Dilute Germanium Carbides
I. A. Gulyas, C. A. Stephenson, Qian Meng +2
Conduction and valence band states for the highly mismatched alloy (HMA) Ge:C are projected onto Ge crystal states, Ge vacancy states, and Ge/C atomic orbitals, revealing that subs…
Phonon-Phonon Quantum Coherent Coupling in GaAs/AlAs Superlattice
Feng He, Nathanial Sheehan, Seth R Bank +2
Quantum coherent coupling between a zone-center phonon and two acoustic phonons was observed in two GaAs/AlAs superlattices (8 nm/8 nm and 5.4 nm/5.4 nm) at ambient temperature. Us…
Spin-Orbit Torque and Nernst Effect in Bi-Sb/Co Heterostructures
Niklas Roschewsky, Emily S. Walker, Praveen Gowtham +4
Harmonic measurements of the longitudinal and transverse voltages in Bi-Sb/Co bilayers are presented. A large second harmonic voltage signal due to the ordinary Nernst effect is ob…
Picosecond Transient Thermoreflectance for Thermal Conductivity Characterization
Jihoon Jeong, Xianghai Meng, Ann Kathryn Rockwell +4
We have developed a transient thermoreflectance technique using picosecond pulsed and cw laser to study thermal conductivity and interface conductance in both thin-films and bulk m…
Comparison between Grating Imaging and Transient Grating Techniques on Measuring Carrier Diffusion in Semiconductor
Ke Chen, Xianghai Meng, Feng He +5
Optical grating technique, where optical gratings are generated via light inference, has been widely used to measure charge carrier and phonon transport in semiconductors. In this…
Versatile Large-Area Custom-Feature van der Waals Epitaxy of Topological Insulators
Tanuj Trivedi, Anupam Roy, Hema C. P. Movva +4
As the focus of applied research in topological insulators (TI) evolves, the need to synthesize large-area TI films for practical device applications takes center stage. However, c…
Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials
Huseyin R. Seren, Jingdi Zhang, George R. Keiser +6
The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector, and fr…
Electronic and optical properties of GaSb:N from first principles
Priyamvada Jadaun, Hari P. Nair, Vincenzo Lordi +2
GaSb:N displays promise towards realization of optoelectronic devices accessing the mid-infrared wavelength regime. Theoretical and experimental results on its electronic and optic…
Design and analysis of photonic crystal coupled cavity arrays for quantum simulation
Arka Majumdar, Armand Rundquist, Michal Bajcsy +3
We performed an experimental study of coupled optical cavity arrays in a photonic crystal platform. We find that the coupling between the cavities is significantly larger than the…
Analysis of Laser & Detector Placement in MIMO Multimode Optical Fiber Systems
Kumar Appaiah, Sagi Zisman, Sriram Vishwanath +1
Multimode fibers (MMFs) offer a cost-effective connection solution for small and medium length networks. However, data rates through multimode fibers are traditionally limited by m…
Virtual Scanning Tunneling Microscopy: A Local Spectroscopic Probe of 2D Electron Systems
Adam Sciambi, Matthew Pelliccione, Seth R. Bank +2
We propose a novel probe technique capable of performing local low-temperature spectroscopy on a 2D electron system (2DES) in a semiconductor heterostructure. Motivated by predicte…
Vertical Field-Effect Transistor Based on Wavefunction Extension
Adam Sciambi, Matthew Pelliccione, Michael P. Lilly +5
We demonstrate a mechanism for a dual layer, vertical field-effect transistor, in which nearly-depleting one layer will extend its wavefunction to overlap the other layer and incre…
Probing energy barriers and quantum confined states of buried semiconductor heterostructures with ballistic carrier injection: An experimental study
Wei Yi, Venkatesh Narayanamurti, Joshua M. O. Zide +2
A three-terminal spectroscopy that probes both subsurface energy barriers and interband optical transitions in a semiconductor heterostructure is demonstrated. A metal-base transis…