Narayan Prasai

Visiting Assistant Professor

Narayan Prasai headshot


Narayan Prasai completed his Master degree in Physics from Tribhuvan University, Nepal. He completed his PhD from University of Miami, Florida in 2015, understanding spin-phonon coupling and magnetic heat transport in low-dimensional quantum magnets. During his postdoc at University of Miami, he studied spin phases and magnon heat transport in the helimagnetic compounds via thermal conductivity measurements at low temperature. During his time as a graduate student and postdoc, he taught several undergraduate laboratory classes and discussion classes. He joined St. Mary's college physics department in January of 2019 where he is teaching Senior applied physics and core physics courses as well as introductory physics courses.

Course Recently Taught:
  • PHY475 Topics in Applied Physics
  • PHY142 General Physics II
  • PHY142L General Physics II Lab

Spin phases of the helimagnetic insulator Cu(2)OSeO(3) probed by magnon heat conduction, 2019, Physical Review B We report studies of thermal conductivity as functions of magnetic field and temperature in the helimagnetic insulator Cu 2 OSeO 3 that reveal novel features of the spin-phase transitions as probed by magnon heat conduction. The tilted conical spiral and low-temperature skyrmion phases, recently identified in small-angle neutron scattering studies, are clearly identified by sharp signatures in the magnon thermal conductivity. Magnon scattering associated with the presence of domain boundaries in the tilted conical phase and regions of skyrmion and conical-phase coexistence are identified.


Areas of Research Specialization

  • Condensed Matter Physics
  • Material Science

Areas of Teaching Specialization

  • Solid State Physics
  • Thermal and Statistical Physics
  • Introductory Material Science
  • Introductory Physics Sequences


  • Ph.D. in Physics at University of Miami, 2015
  • M.S. in Physics at Tribhuvan University, 2007
  • B.S. in Physics, Chemistry, Math at Tribhuvan University, 2003