Sambhu G. Nath

activity

20232026

collaborators

6 papers

cond-mat.mes-hall2026

Photon Momentum Enabled Symmetry Breaking and Nonlinear Photocurrents in the Centrosymmetric Dirac Semimetal PdTe

Sambhu G Nath, Subhadip Manna, R K Gopal +1

In centrosymmetric Dirac semimetals, second order nonlinear photocurrents are forbidden by the coexistence of time-reversal and inversion symmetries. Here, we demonstrate that fini…

cond-mat.mtrl-sci2025

Magnetoconductance evolution across the topological-trivial phase transition in $I n_{x} (B i_{0.3} S b_{0.7})_{2 - x} T e_{3}$ thin films

Sambhu G Nath, Subhadip Manna, Kanav Sharma +4

We investigate the evolution of electronic transport across the topological-trivial phase transition in $In_{x} (Bi_{0.3} Sb_{0.7})_{2 - x} Te_{3}$ thin films by s…

cond-mat.mtrl-sci2025

Ultrafast dynamics of carriers, coherent acoustic phonons and strain pulses in BiSbTe1.5Se1.5 topological insulator thin films

Anupama Chauhan, Sidhanta Sahu, Poulami Ghosh +6

We Investigate the ultrafast carrier, coherent acoustic phonons (CAPs), and acoustic strain pulse dynamics in topological insulator BiSbTe1.5Se1.5 (BSTS) thin films of varying thic…

cond-mat.mtrl-sci2024

Investigation of magnetic order influenced phonon and electron dynamics in MnBi $_{2}$ Te $_{4}$ and Sb doped MnBi $_{2}$ Te $_{4}$ through terahertz time-domain spectroscopy

Soumya Mukherjee, Anjan Kumar NM, Subhadip Manna +4

MnBi $_{2}$ Te $_{4}$ , the first topological insulator with inherent magnetic ordering, has attracted significant attention recently for providing a platform to realize several exotic…

cond-mat.mes-hall2024

Anisotropic magneto-photothermal voltage in Sb2Te3 topological insulator thin films

Subhadip Manna, Sambhu G Nath, Samrat Roy +8

We studied longitudinal and Hall photothermal voltages under a planar magnetic field scan in epitaxial thin films of the Topological Insulator (TI) Sb2Te3, grown using pulsed laser…

cond-mat.mes-hall2023

Enhancement of spin to charge conversion efficiency at the topological surface state by inserting normal metal spacer layer in the topological insulator based heterostructure

Sayani Pal, Anuvab Nandi, Shambhu G. Nath +5

We report efficient spin to charge conversion (SCC) in the topological insulator (TI) based heterostructure ( $B i S b T e_{1.5} S e_{1.5} / C u / N i_{80} F e_{20}$ ) by using spin-pumping techniq…