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Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals

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TLDR
In this paper, the authors reported the experimental discovery of intrinsic ferromagnetism in Cr 2 Ge 2 Te 6 atomic layers by scanning magneto-optic Kerr microscopy.
Abstract
We report the experimental discovery of intrinsic ferromagnetism in Cr 2 Ge 2 Te 6 atomic layers by scanning magneto-optic Kerr microscopy. In this 2D van der Waals ferromagnet, unprecedented control of transition temperature is realized via small magnetic fields.

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Pressure-induced spin reorientation transition in layered ferromagnetic insulator Cr 2 Ge 2 Te 6

TL;DR: Lin et al. as discussed by the authors investigated anisotropic magnetoresistance (AMR) of Cr2Ge2Te6 (CGT), a layered ferromagnetic insulator, under an applied hydrostatic pressure up to 2 GPa.
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Confinement of atomically defined metal halide sheets in a metal-organic framework.

TL;DR: Overall, these results demonstrate that the pore environment of a metal–organic framework can be designed to afford precise control over the size, structure and spatial arrangement of inorganic clusters.
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Probing Magnetism in Insulating Cr2Ge2Te6 by Induced Anomalous Hall Effect in Pt.

TL;DR: These results clearly demonstrate that CGT imprints its magnetization in the AHE signal of the Pt layer, and establish a powerful way of investigating magnetism in 2D insulating ferromagnets, which can potentially work for monolayer devices.
References
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Journal ArticleDOI

The rise of graphene

TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
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QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials

TL;DR: QUANTUM ESPRESSO as discussed by the authors is an integrated suite of computer codes for electronic-structure calculations and materials modeling, based on density functional theory, plane waves, and pseudopotentials (norm-conserving, ultrasoft, and projector-augmented wave).
Journal ArticleDOI

Absence of Ferromagnetism or Antiferromagnetism in One- or Two-Dimensional Isotropic Heisenberg Models

TL;DR: In this paper, it is rigorously proved that at any nonzero temperature, a one- or two-dimensional isotropic spin-S$ Heisenberg model with finite-range exchange interaction can be neither ferromagnetic nor antiferromagnetic.
Journal ArticleDOI

Half-metallic graphene nanoribbons

TL;DR: In this article, it was shown that if in-plane homogeneous electric fields are applied across the zigzag-shaped edges of the graphene nanoribbons, their magnetic properties can be controlled by the external electric fields.
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