Facilities
Cryogenic VTI (300 mK, 12 Tesla)
Cryogenic Variable Temperature Insert (12 T, 300 mK) setup with rotator probe
2d Layer Aligner
2D dry transfer system with 0.01 degree rotation and heater enabled stage
Exfoliated 2d vdW material onto Si/SiO_2 substrate
Targeted delivery of a few nm thick 2d-vdW material onto pre-patterned (EBL) substrate
Ferro-Magnetic Resonance (FMR) Spectroscopy
FMR Spectroscopy Setup (NanOsc Sweden PhaseFMR) with ISHE enabled.
Magnetization dynamics is time-dependent motion of the magnetization defined by Landau–Lifshitz–Gilbert (LLG) equation. It is useful to investigate the magnetic properties, magnetic phase transition, and magnetic interactions in the ferromagnetic materials. We work with both simulation and experiments of the magnetization dynamics to understand the magnetic interactions, anisotropy and their effects on the spin current.
Spin pumping is the generation and propagation of pure spin current using the magnetization dynamics. The generated pure spin current is injected into high spin-orbit coupling materials and converted into the charge current utilizing inverse spin Hall effect. We are working on the SP-ISHE method to detect the pure spin current in the ferromagnet/heavy metal interfaces.
Multiferroic properties measurement setup
Multiferroic properties measurement setup powered by PRECESION PREMEIER II(Radiant Technologies) embedded with low temperature setup powered by LAKESHORE 340 PID controller
(A) Remanent electric polarization of PLD made PCMO|Si at different temperature from 80 K-120 K taken by “PUND” method at pulse width of 1 kHz with maximum applied field of 1 kV/cm. Inset: The corresponding saturation polarization versus temperature, (B) Corresponding temperature dependence of coercive field at pulse width of 1 kHz , (C) frequency dependence of coercive field at 80 K for two different maximum applied electric fields of 700 V/cm (solid red) and 1 kV/cm (open blue).
Wire Bonder and E-Beam Deposition System
Wire Bonder is used to make contact using thin platinum/gold/aluminum wire with thin film grown on substrate.
Electron Beam Deposition System for high quality thin films
2-Zone Furnace for Chemical Vapor Transport(CVT) and Muffle Furnace
Chemical Vapor Transport(CVT) Furnace: To grow high quality single crystals.
High quality single crystals (maximum lateral size of 5mm) were grown using CVT method with the 2-zone tube furnace
Muffle Furnace: To grow high quality single crystals.
High quality single crystals were grown using self flux method
Single crystals grown by self flux and chemical vapor transport (CVT) method