Welcome John Schaibley, Barun Dhar, Rohit Singh to the University of Arizona Physics Department

Yemille Medina

Our faculty and staff are the driving force for our department’s success, we are greatly honored to have three new members becoming a part of our department.

John Schaibley has joined our department as an Assistant Professor, he will be teaching and conducting research. His field of study is Atomic, Molecular, Optical, and Condensed Matter Physics
“My research is focused on the discovery and understanding of novel electronic, optical and spin effects in low dimensional solid state systems, and their applications to technology. I am currently focused on optoelectronic and spin physics of 2D material semiconductor systems, specifically monolayer transition metal dichalcogenides (TMDCs), and 2D heterostructure devices, where we use the unique properties of disparate materials (TMDC, graphene, hexagonal boron nitride, FeSe, NbSe2, and organic semiconductors) layered together, to study the physics of atomically sharp material junctions.”
–Dr. Schaibley

Barun Dhar joined our department as a faculty member and will be lecturing. His field of study is Astrophysics and Cosmology.
“My previous research focused on the structure of galaxies show how one can infer certain 3D properties of galaxies from the 2D images we obtain through our telescopes. I show this by estimating models for the distribution of stars in three types of elliptical galaxies -- big, small and dwarfs. The modeling errors are consistently around an unprecedented level of 3% over very large ranges -- luminosity varying by 6 orders of magnitude and radial distances spanning 5 orders of magnitude -- for all three types. There is also a curious correlation between the 'shape parameter (n)' of the outer-component of massive galaxies (data) and that of the Dark Matter halos of massive galaxies (from N-body simulation).
I previously taught a physics class at Texas A&M, it was rated "one of the best experience in their freshman year" by non-physics majors prompting the Director of Honors Program to recognize me as a "very special instructor who provides a challenging and supportive learning environment". I was also nominated for the Student Impact Award at Texas A&M and have twice won the Outstanding Teaching Assistant award at the University of Minnesota while pursuing my PhD. I am looking forward to helping students, at the University of Arizona, in experiencing what Richard Feynman once called "The Pleasure of Finding things out". Lecturer for PHY103, PHY161H and PHY263H.”
-Professor Dhar

Rohit Singh joined our department as an Administrative Staff member as our new Laboratory Manager.
“I am the laboratory manager at the department of physics at the University of Arizona. I am responsible for setting up the weekly undergraduate introductory physics experiments and make sure the physics labs function smoothly on daily basis. I train a large number of teaching assistants (TAs) in teaching techniques and safe lab practices; the TAs run different the laboratory sections. I also work on developing new lab techniques, and manage advance laboratory courses taken by physics department majors.
I am not currently active in research, but in the past I worked in Terahertz spectroscopy. I (with other team members) developed a technique called Modulated Orientation Sensitive Terahertz Spectroscopy (MOSTS) to measure the correlated structural motions in molecular crystals by using their anisotropic and birefringent behavior. We achieved high sensitivity and mode separation, by using single molecular crystal such as sucrose and oxalic acid, and rapid modulation of the relative alignment of the terahertz polarization and the crystal axes by rotating the sample. By looking into the signal at the rotation frequency, we determined the polarization sensitive signal and mapped out the optically active vibrational resonances. We compared our measured spectra with the calculations, and found a close agreement.”
-Rohit Singh

We would like to congratulate our new members on their multiple awards, publications, and research and welcome them to the University of Arizona Physics Department.