11 papers
Davydov Splitting, Resonance Effect and Phonon Dynamics in CVD grown Layered MoS2
Deepu Kumar, Birender Singh, Rahul Kumar +2
We present a comprehensive temperature dependent Raman measurements for horizontally aligned CVD grown layered MoS2 in a temperature range of 4 to 330 K under resonance condition.…
Fractional Spin fluctuations and quantum liquid signature in Gd2ZnIrO6
Birender Singh, Deepu Kumar, Vivek Kumar +5
Hitherto, the discrete identification of quantum spin liquid phase, holy grail of condensed matter physics, remains a challenging task experimentally. However, the precursor of qua…
Coupling of lattice, spin and intra-configurational excitations of Eu3+ in Eu2ZnIrO6
Birender Singh, M. Vogl, S. Wurmehl +3
In Eu2ZnIrO6, effectively two atoms are active i.e. Ir is magnetically active, which results in complex magnetic ordering within the Ir sublattice at low temperature. On the other…
Kramer doublets, phonons, crystal-field excitations and their coupling in Nd2ZnIrO6
Birender Singh, M. Vogl, S. Wurmehl +3
We report comprehensive Raman-scattering measurements on a single crystal of double-perovskite Nd2ZnIrO6 in temperature range of 4-330 K, and spanning a broad spectral range from 2…
Anomalous Phonon Renormalization in Single Crystal of Silicon
Himanshi, Birender Singh, Pradeep Kumar
The temperature dependence of the first-order phonon mode of single crystal of Silicon (Si) is determined by Raman scattering in a broad temperature range of 4-623 K. Our studies r…
Anisotropic Electron-Photon-Phonon Coupling in Layered MoS2
Deepu Kumar, Birender Singh, Rahul Kumar +2
Transition metal dichalcogenide, especially MoS2 has attracted lot of attention recently owing to its tunable visible range band gap and anisotropic electronic and transport proper…