Drumhead surface states in topological nodal line semimetals

28/12/2017 @ 11:00 AM – 12:30 PM Asia/Singapore Timezone
S16 Level 6 – Theory Common Conference Room

Speaker: Dr. Nimisha Raghuvanshi
Affiliation: POSTECH, Korea
Host: Prof. Vitor M. Pereira
Abstract Details: Nodal-line semimetals are characterized by one-dimensional nodal rings in the bulk protected by symmetry. Projection of these nodal rings onto the surface of a three dimensional topological semimetal leads to a new class of topological surface states known as drumhead surface states. Materials hosting these exotic features are expected to exhibit several quantum phenomena along with unusual transport characteristics and hence are promising candidates for device application and quantum information. Our research aims at verifying the existence and stability of the drumhead surface states in noncentrosymmetric semimetals.

About the Speaker: Research interests:
Theoretical Condensed Matter Physics
- Topological superconductors and semi-metals, Half-heusler alloys
- Magnetism in iron based superconductors
- Multi-orbital correlated itinerant models, SDW state, transverse spin fluctuations and susceptibility in broken-symmetry state up to random phase approximation, stabilization of the magnetic state and spin waves in multiorbital models for iron pnictides.