Structures

The requirements of pristine crystalline ordering can be brought under control by the use of complete randomness in the superconductors and insulators structure. For lossless electronics and making the nuts and bolts of quantum computers, topological randomness may be the answer.

An amorphous material exhibiting topological superconductivity was developed in a study by a group of researchers at Aalto University in Finland. The materials which were used uptil date were of highly regular surfaces showing desired electrical properties.

Topological superconductors can be fabricated according to this study, as they are not available in this world.

This study was published in Nature Communications.

The researchers have presented a method of fabricating topological materials in amorphous systems with randomly placed constituents. This superconductivity can be achieved in a material by sprinkling magnetic atoms randomly on superconducting

Figure 1– Randomly sprinkled magnetic atoms (red arrows) on a superconducting surface. This gives rise to a topological superconducting phase. Inset: The onset of the topological phase is signalled by the appearance of Majorana edge mode encircling the system.

Credits to Teemu Ojanen.

surface.

To use topological quantum matter in various applications, it’s important to find new candidates for amorphous topological materials, says one of the researchers of this study.

The topological superconductors recently came into the picture due to the collective movement of many individual particles or unconventional quantum-level phenomenon known as Majorana fermion excitations. They are being significantly envisioned as main ingredients of topological quantum computers.

Fabrication and manufacturing will be much more convenient as compared to current methods if highly irregular random systems will work as topological superconductors, says Docent Teemu Ojanen, the leader of this research group.

The random quantum material since, doesn’t exist in this world but can be brought to this world according to this research, and will not take much longer period of time for its existence.

Authors:

  1. Bunty B. Bommera
  2. Dakshata U. Kamble

 

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