46 citations · 118 across the 9 of their papers we have counts for
9 papers
Emergence of half-metallic ferromagnetism and valley polarization in transition metal substituted WSTe monolayer
Shivani Kumawat, Chandan Kumar Vishwakarma, Mohd Zeeshan +3
Two-dimensional (2D) Janus materials hold a great importance in spintronic and valleytronic applications due to their unique lattice structures and emergent properties. They intrin…
THz probing of non-trivial topological states in Co2MnGe Heusler alloy thin films
Ekta Yadav, Anand Nivedan, Sunil Kumar
Co2MnGe (CMG) has been demonstrated recently as a half-metallic ferromagnetic Heusler alloy which possesses a topologically non-trivial band structure. This behavior is unique to s…
Ultrafast THz probing of nonlocal orbital current in transverse multilayer metallic heterostructures
Sandeep Kumar, Sunil Kumar
THz generation from femtosecond photoexcited spintronic heterostructures has recently become a versatile tool for investigating ultrafast spin-transport and transient charge-curren…
Excitation wavelength-dependent ultrafast THz emission from surface and bulk of three-dimensional topological insulators
Anand Nivedan, Sunil Kumar
Three-dimensional topological insulators possess various interesting properties that are promising for various modern applications, including in the recently emerging fields of ult…
Optical Damage Threshold and THz Generation Efficiency of (Fe,CoFeB)/(Ta,Pt) Spintronic Emitters
Sandeep Kumar, Anand Nivedan, Arvind Singh +5
THz pulses are generated from femtosecond pulse-excited ferromagnetic/nonmagnetic spintronic heterostructures via inverse spin Hall effect. The contribution from ultrafast demagnet…
Sub-bandgap activated charges transfer in a graphene-MoS2-graphene heterostructure
Sunil Kumar, Arvind Singh, Anand Nivedan +7
Monolayers of transition metal dichalcogenides are semiconducting materials which offer many prospects in optoelectronics. A monolayer of molybdenum disulfide (MoS2) has a direct b…
THz pulses from optically excited Fe, Pt and Ta based Spintronic Heterostructures
Sandeep Kumar, Anand Nivedan, Arvind Singh +1
Spintronic heterostructures are considered to be the new generation THz sources for their capability in producing high power and broadband THz radiation. Here, we provide a brief r…
Enhancement in optically induced ultrafast THz response of MoSe2MoS2 heterobilayer
Sunil Kumar, Arvind Singh, Sandeep Kumar +7
THz conductivity of large area MoS2 and MoSe2 monolayers as well as their vertical heterostructure, MoSe2MoS2 is measured in the 0.3-5 THz frequency range. Compared to the monolaye…
Magnetic field-dependent resistance crossover and logarithmic to non-saturating magnetoresistance in topological insulator BiTe
Anand Nivedan, Kamal Das, Sandeep Kumar +4
We report a metal-insulator like transition in single crystalline 3D topological insulator Bi2Te3 at a temperature of 230K in presence of an external magnetic field applied normal…