Electron gas may open up a new field of device physics
Author: BI Bureau
New Delhi: Scientists have produced electron gas with ultra-high mobility, which can speed up transfer of quantum information and signal from one part of a device to another and increase data storage and memory. The need for attaining new functionalities in modern electronic devices has led to the manipulation of property of an electron called spin degree of freedom along with its charge. This has given rise to an altogether new field of spin-electronics or ‘spintronics’. It has been realized that a phenomenon called the ‘Rashba effect’, which consists of splitting of spin-bands in an electronic system, might play a key role in spintronic devices.
Scientists at the Institute of Nano Science and Technology (INST), Mohali, Punjab, an autonomous institution of Department of Science and Technology (DST), Government of India, have produced an ultra-high mobility 2d-electron gas(2DEG) at the interface of two insulating oxide layers.
Due to the high mobility of the electron gas, electrons do not collide inside the medium for a long distance and hence do not lose the memory and information. Hence, such a system can easily remember and transfer its memory for a long time and distance. In addition, since they collide less during their flow, their resistance is very low, and hence they don’t dissipate energy as heat. So, such devices do not heat up easily and need less input energy to operate.
Aided by a grant from the DST-Nanomission in the form of a sophisticated, custom-made instrument called a combinatorial pulsed laser deposition setup, Dr Suvankar Chakraverty Associate Professor at Institute of Nano Science and Technology (INST), Mohali, Punjab, have produced 2DEG with ultra mobility at the novel interface composed of chemicals EuO and KTaO3. The strong spin-orbit coupling and relativistic nature of the electrons in the 2DEG resulted in the ‘Rashba field’. The research was published in the journal ‘Advanced Quantum Technologies’.
According to the INST team, realization of large Rashba-effect at such oxide interfaces containing highly mobile electron gas may open up a new field of device physics, especially in the field of quantum technology applicable for next-generation data storage media and quantum computers. /BI/
More In Tech Governance
The exports of agricultural commodities from March to June 2020 shot up by 23.24 percent on-year to Rs 25,552.7 crores.
As the economy comes to a standstill amid the coronavirus-led lockdown, India’s agriculture sector has taken the baton of economic growth in its hands. The exports of agricultural commodities from March to June 2020 shot up by 23.24 percent on-year to Rs 25,552.7 crores, according to the Ministry of Agriculture & Farmers Welfare. The government said that self-reliant agriculture is critical for the goal of an Atmanirbhar Bharat and for this, agricultural export is extremely important as besides earning foreign exchange for the country, the exports help farmers, producers, and exporters to take advantage of the wider international market and increase their income.
The surge in exports has also resulted in increased production in the farm sector by increasing coverage area and productivity. The share of India’s agricultural exports and imports in the world agriculture trade in 2017 was 2.27 percent and 1.90 percent, respectively. Even during the difficult time of pandemic lockdown, India took care not to disturb the world food supply chain and continued to export, the government said.
Ministry of Agriculture has prepared a comprehensive action plan for the promotion of Agri trade; the twofold approach focuses on boosting Agri Export with emphasis on value addition and action plan for Import Substitution. Recently, the Agriculture sector has witnessed a series of reforms, giving more choices to the farmers to sell their produce at competitive rates.
To mention a few, the Export strategy focuses on the export promotion of fast-evolving niche markets of Wellness food/ Health-conscious food/nutraceuticals, Development of “Brand India” in campaign mode to help penetration into new foreign markets and of new products which automatically translates into higher value realization, Gulf countries have been identified as focus destination to increase the market share which is a strong market for India though presently India caters to only 10-12% share of their total imports. A product-market matrix has been made containing a list of products of strength that could be expanded in new geographies and a list of known markets which can be introduced with newer products.
At the behest of the Department of Agricultural Cooperation & Farmers’ Welfare, Ministry of Agriculture, product-specific Export Promotion Forums have been created to lead Agri exports to new heights. Each Export Promotion Forum shall be having exporters of the related commodity as its members along with official members representing concerned Ministries/Departments of the Central and State Governments. Chairman APEDA shall be the chairman of each of these forums. The forums will meet at least once every two months, to discuss recommendations on issues pertaining to the export.
The recommendations of the forum will be placed in the product committee / Authority of APEDA. The Forum will keep in close contact with the concerned organization of the Ministry of Agriculture such as MIDH, Extension, NPPO, etc., DGFT, Ministry of Civil Aviation, MoFPI, etc. to further the interest of agricultural export.
