Research & Initiatives

The emerging research field of superconducting spintronics, which integrates superconductivity with spintronics, promises novel opportunities for developing non-dissipative spin-based logic and memory technologies.

Our study focuses on key components of superconducting spintronics: spin-polarized triplet supercurrents, equilibrium spin-transfer torque, and non-volatile anomalous phase shift.

Overview

Superconducting spintronics represents a promising frontier in research, blending the unique properties of superconductors with spin-based electronics. This emerging field aims to create innovative technologies that offer non-dissipative operation and efficient manipulation of spin for logic and memory applications.

Key components of superconducting spintronics include:

1) Spin-Polarized Triplet Supercurrents:

In traditional superconductors, Cooper pairs consist of electrons with opposite spins, forming a spin-singlet state. In superconducting spintronics, efforts are focused on generating and manipulating spin-polarized triplet supercurrents. These involve Cooper pairs where both electrons have parallel spins, enabling spin-dependent transport and functionalities.

2) Equilibrium Spin-Transfer Torque:

Spin-transfer torque refers to the transfer of angular momentum between spin-polarized currents and magnetic moments. In superconducting spintronics, equilibrium spin-transfer torque mechanisms are explored, which can lead to efficient control and manipulation of spin orientations without dissipative losses. This torque can influence the dynamics of magnetic moments and thus enable novel ways of storing and processing information.

3) Non-Volatile Anomalous Phase Shift:

Anomalous phase shifts refer to unconventional changes in the phase of superconducting order parameters induced by spin-polarized currents or magnetic interactions. In superconducting spintronics, these phase shifts can result in non-volatile states that retain information without continuous power consumption, akin to the persistent currents in superconducting circuits but with spin-related characteristics.

These components collectively pave the way for realizing advanced spin-based logic and memory technologies with unprecedented efficiency and functionality. By harnessing the synergy between superconductivity and spintronics, we aim to overcome current limitations in conventional semiconductor-based technologies, potentially leading to faster, more energy-efficient, and scalable devices for future electronics.

*Here are the highlights of our recent studies in the field of superconducting spintronics.