What is Hanle effect in spintronics?
What is Hanle effect in spintronics?
The Hanle effect, also known as zero-field level crossing, is a reduction in the polarization of light when the atoms emitting the light are subject to a magnetic field in a particular direction, and when they have themselves been excited by polarized light.
What is the use of spintronics?
Spintronic devices are used in the field of mass-storage devices. It is used to compress massive amounts of data into a small area, as an instance, approximately one trillion bits per square inch (1.5 Gbit/mm²) or roughly 1 TB data can be stored on a single-sided 3.5″ diameter disc.
What are the advantages of spintronics?
Less energy is needed to change spin than to generate a current to maintain electron charges in a device, so spintronics devices use less power. Spin states can be set quickly, which makes transferring data quicker.
What is the future of spintronics?
A novel combination of magnetic and semiconductor materials could lead to optical and electronic devices that are faster and lower-powered. The desire to build smaller, faster, cheaper electronics has prompted a number of researchers to try using the “spin” of an electron in transistors.
What is Spin injection?
Spin injection utilizes the strong, short-range quantum mechanical exchange interaction of the injected spin polarized electrons with the atomic spins on the atoms in the FM sensor layer. In order to achieve a sufficient density of the injected spins one uses pillar diameters that are of the order of 100 nm.
Who invented spintronics?
The history of spintronics Spintronics dates to the 1960s and was discovered by a group at IBM headed by Leo Esaki, a Japanese physicist who would later go on to win a share of the Nobel Prize I 1973 for discovering the phenomenon of electronic tunneling.
What are spintronics materials?
Ferromagnetic metals include Fe, Co, Ni metals, and also their alloys. They are the oldest spintronics materials that were used to construct spin valves and magnetic tunnel junctions. These materials are abundant and cheap, and can be handled easily.
Why spintronics is better than electronics?
The advantage of spin-based electronics is that they are very nonvolatile compared to charge-based electronics, and quantum-mechanical computing based on spintronics could achieve speeds unheard of with conventional electrical computing.
What is spintronics PDF?
Spintronics also known as magneto electronics,is an emerging technology that exploits both the intrinsic spin of the electron and its associated magnetic moment, in addition to its fundamental electronic charge, in solid-state devices.
Is spintronics a quantum computer?
By carefully controlling and manipulating an electron’s spin within a molecule, it turns out we can actually do quantum computations. The preparation and readout of the electron’s spin state on molecules is made by zapping them with electric or magnetic fields.
What is spintronic material?
The integration of magnetic materials and impurities into nanoelectronic devices enables the use of the electron spin, as well as its charge, for carrying information. This new paradigm in information processing devices has been called “spintronics” in analogy to electronics.
Which material is suitable for spintronics devices?
What are spintronics devices?
Spintronic devices comprise magnetic layers that serve as spin polarizers or analyzers separated by non-magnetic layers through which the spin-polarized electrons are transmitted. It provides a new way to manipulate the magnetization of magnetic nanostructures by a spin-polarized current.
Is Spintronics a new technology?
Abstract. Spintronic, also termed spin electronics or spin transport electronics, is a kind of new technology, which exploits the two fundamental degrees of freedom-spin-state and charge-state of electrons to enhance the operational speed for the data storage and transfer efficiency of the device.