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Frontiers in Quantum Materials

As the temperature cools down to tens of Kelvins and even a few Kelvin, quantum effects overwhelm thermal effects and become essential to determine the responses of a material system to external stimulus. Such responses reflect the emergence of collective excitations from a large amount of elementary particles such as electrons, spins which are extremely challenging to manipulate independently at single particle level. In contrast, a collective response of those many becomes controllable and tunable by external knobs, such as electric and magnetic field, strains, temperature, etc. The research to understand and manipulate emergent collective modes in materials at low temperature defines the realm of quantum materials. 

This collection brings together original research and reviews from npj Quantum Materials, a journal dedicated to the exciting field of quantum materials, and Nature Communications, an open access, multidisciplinary journal. The articles featured below showcase the breadth and depth of recent published research at the frontier of quantum materials.

npj Quantum Materials

Nature Communications

Increasing the critical current of superconductors has been a central scientific effort, but the fundamental understanding of critical currents near 0 K is lacking. Here, Doron et al. report that in disordered superconductors the critical current near 0 K is well explained by a thermal bi-stability where electrons thermally decouple from phonons in a discontinuous manner.

Article | Open Access | | Nature Communications