I am working with an experimental research group in the Department of Physics at the Indian Institute of Technology, Ropar. We are working in the field of spin physics in insulators, magnetoresistance effects, magnetic resonance, anomalous hall effect as well as spin transfer and spin orbit torques in magnetic heterostructures.  

Our main focus in spintronics is the inter-conversion of charge and spin currents. Recently, a focus has been on magnetic insulators where spin transport occurs through spin-wave propagation and spin currents can be generated by either spin injection or thermal gradients. These phenomena can be studied in simple bilayer films consisting of a ferrimagnetic (FIM) or Antiferromagnetic (AFM) insulator, and a heavy metal (HM) with large spin-orbit coupling such as Pt,W and so on. Spin to charge current conversion in such bilayers occurs by the inverse spin-Hall and Rashba-Edelstein effects. 

Spin to charge conversion is employed for investigating the spin Seebeck effect (SSE), wherein a thermal gradient applied across a ferromagnetic insulator (FIM) film induces the generation of a spin current. This spin current is then directed into an adjacent heavy metal (HM) film, resulting in the emergence of a transverse charge current or voltage across the heavy metal film under open circuit conditions.

Recent research endeavors have underscored the presence of substantial torques linked to thermally induced spin currents within magnetic tunnel junctions. Thermal gradients serve as a convenient methodology for characterizing spin transport, offering insights into inverse effects, notably the spin torque exerted on antiferromagnetic (AFM)/ferromagnetic insulator (FIM) magnetization. This torque arises in response to spin currents associated with the flow of charge current within the heavy metal (HM) film.

In essence, the discourse delves into the utilization of spin to charge conversion and thermal gradients as analytical tools to explore spin transport phenomena. It also elucidates the reciprocal impacts on magnetization within distinct materials and configurations, including magnetic tunnel junctions and the interplay between antiferromagnetic and ferromagnetic insulators, thereby maintaining a scholarly perspective.

Indian Institute of Science Education and Research Mohali (IISER Mohali) Knowledge city, Sector 81, SAS Nagar, Manauli PO 140306

Indian Institute of Technology Roorkee, Uttarakhand-247667, India. 

Indian Institute of Technology Mandi, Kamand, Himachal Pradesh(175005) 

Indian Institute of Technology Jammu, NH-44 , PO Nagrota, Jagti, Jammu and Kashmir 181221 

Indian Institute of Technology Patna, Bihta, Patna -801106 (Bihar) 

Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab 160062, India 

Advanced Safety & User Experience, Aptiv Services, Krakow 30-707, Poland 

Silicon Austria Labs GmbH, Villach 9524,  Austria

Indian Association for the Cultivation of Science, Kolkata 700032, INDIA 

Vikram Sarabhai Space Center (VSSC) Trivandrum - 695022, Kerala, India 

Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085 India