Ryan Van Haren, Ph.D.

About me
I began my scientific training at my home state school of Arizona State University, where, as a young student, I first engaged in condensed matter physics research under the tutelage of Dr. Nicole Herbots. Upon the completion of a B.S. in Physics and a B.A. in Philosophy from ASU in 2017, I wanted to pursue further studies in solid state physics and was accepted into the physics Ph.D. program at the University of California Santa Cruz.
While at UCSC, I worked in the lab of Professor David Lederman performing thin film crystal growth and crystallographic, magnetic, and electronic characterization of thin film crystals. In 2024 I successfully defended my Ph.D. thesis, in which I studied antiferromagnetic insulators and topological insulators. Among my proudest achievements from my Ph.D. work were growing novel antiferromagnetic insulator - topological insulator heterostructures and implementing topological Dirac fermion theory to model transport behavior in topological insulators for the first time.
After receiving my Ph.D. in physics from UCSC, I moved to the Washington D.C. metropolitan area to accept a position at the Laboratory for Physical Sciences, a partner research facility between the National Security Agency and the University of Maryland, as a postdoctoral associate. At LPS I am a member of the Advanced Manufacturing and Sensing group under Dr. Adam Friedman, conducting research in the national strategic priorities of next generation engineering materials, novel sensing, and advanced manufacturing.
First author peer-reviewed publications
Suppressed weak anti-localization in topological insulator - antiferromagnetic insulator (BiSb)2Te3 - MnF2 thin film bilayers
Ryan Van Haren and David Lederman
Phys. Rev. B 110, 205409
​
Emergent magnetic phases and piezomagnetic effects in MnxNi1−xF2 thin film alloys
Ryan Van Haren, Nessa Hald, and David Lederman
Phys. Rev. B 108, 134437
​
Surface state mediated ferromagnetism in Mn0.14Bi1.86Te3 thin films
Ryan Van Haren, Toyanath Joshi, and David Lederman
Phys. Rev. Materials 7, 034201
​
More peer-reviewed publications
​
Direct visualization of relativistic quantum scars in graphene quantum dots
​