Magnetic Information-Storage Materials

Tannous, C.; Comstock, R. L.

doi:10.1007/978-3-319-48933-9_49

Cited by 20 publications

(15 citation statements)

References 90 publications

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“…In the case of CrI /MoTe , the heterostructure is modified to an intrinsic semiconducting ferromagnet with Curie temperature (T ) of 60 K 34 . Further, the various emerging fields of technologies related to data storage 35 , energy generation 36 , water purification 37 and biomedicine 38 , which were previously realized with bulk 3-D magnets, can now potentially be enhanced using 2-D magnetic heterostructures.…”

Section: Introductionmentioning

confidence: 99%

Substrate induced electronic phase transitions of CrI$$_{3}$$ based van der Waals heterostructures

Chakraborty

Ravikumar

2021

Sci Rep

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We perform first principle density functional theory calculations to predict the substrate induced electronic phase transitions of CrI$$_{3}$$ 3 based 2-D heterostructures. We adsorb graphene and MoS$$_{2}$$ 2 on novel 2-D ferromagnetic semiconductor—CrI$$_{3}$$ 3 and investigate the electronic and magnetic properties of these heterostructures with and without spin orbit coupling (SOC). We find that when strained MoS$$_{2}$$ 2 is adsorbed on CrI$$_{3}$$ 3 , the spin dependent band gap which is a characteristic of CrI$$_{3}$$ 3 , ceases to remain. The bandgap of the heterostructure reduces drastically ($$\sim$$ ∼ 70%) and the heterostructure shows an indirect, spin-independent bandgap of $$\sim$$ ∼ 0.5 eV. The heterostructure remains magnetic (with and without SOC) with the magnetic moment localized primarily on CrI$$_{3}$$ 3 . Adsorption of graphene on CrI$$_{3}$$ 3 induces an electronic phase transition of the subsequent heterostructure to a ferromagnetic metal in both the spin configurations with magnetic moment localized on CrI$$_{3}$$ 3 . The SOC induced interaction opens a bandgap of $$\sim$$ ∼ 30 meV in the Dirac cone of graphene, which allows us to visualize Chern insulating states without reducing van der Waals gap.

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Section: Introductionmentioning

confidence: 99%

Substrate induced electronic phase transitions of CrI$$_{3}$$ based van der Waals heterostructures

Chakraborty

Ravikumar

2021

Sci Rep

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“…within a complex multi-parameter space continues to be an active subject of technological research for magnetic recording of hard-disk drives operating at room temperature. Nowadays, recording densities as high as 1 Tbit/inch 2 can be obtained [81], suggesting that individual flux quantum imaging limit could be reached with the magnetic imprinting technique, at least at low fields (<50 mT) where the local field modulation amplitude is larger. Although much can be learnt from the colossal work done for optimizing magnetic recording in hard disk drives, extrapolating the acquired knowledge on these information storage devices to cryogenic temperatures is not straightforward since most of the parameters are temperature dependent.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Recording of Superconducting States

Shaw

Alvarez

Brisbois

et al. 2019

Metals

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Local polarization of magnetic materials has become a well-known and widely used method for storing binary information. Numerous applications in our daily life such as credit cards, computer hard drives, and the popular magnetic drawing board toy, rely on this principle. In this work, we review the recent advances on the magnetic recording of inhomogeneous magnetic landscapes produced by superconducting films. We summarize the current compelling experimental evidence showing that magnetic recording can be applied for imprinting in a soft magnetic layer the flux trajectory taking place in a superconducting layer at cryogenic temperatures. This approach enables the ex situ observation at room temperature of the imprinted magnetic flux landscape obtained below the critical temperature of the superconducting state. The undeniable appeal of the proposed technique lies in its simplicity and the potential to improve the spatial resolution, possibly down to the scale of a few vortices.

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“…Data is typically encoded in the two Ising states of a magnetic bit on a homogeneous film with a large magnetocrystalline anisotropy. Furthermore, efforts have been made to encode data on patterned magnetic structures 187,[232][233][234][235][236][237] . The reading and writing process is conveniently realised with a movable head that combines a magnetoresistive sensor for the read-out with a small magnetic field coil for manipulating the magnetisation.…”

Section: Weakly Interacting Magnetic Arraysmentioning

confidence: 99%

Toroidal Order in Magnetic Metamaterials

Lehmann¹

2022

Springer Theses

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Magnetic Information-Storage Materials

Cited by 20 publications

References 90 publications

Substrate induced electronic phase transitions of CrI$$_{3}$$ based van der Waals heterostructures

Substrate induced electronic phase transitions of CrI$$_{3}$$ based van der Waals heterostructures

Magnetic Recording of Superconducting States

Toroidal Order in Magnetic Metamaterials

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