# Weakly-correlated nature of ferromagnetism in non symmorphic CrO$_2$ revealed by bulk-sensitive soft X ray ARPES

@article{Bisti2017WeaklycorrelatedNO,
title={Weakly-correlated nature of ferromagnetism in non symmorphic CrO\$\_2\$ revealed by bulk-sensitive soft X ray ARPES},
author={Federico Bisti and V. A. Rogalev and Michael Karolak and Shreya Paul and A. Gupta and Thorsten Schmitt and Gernot Guntherodt and Volker Eyert and Giorgio Sangiovanni and Gianni Profeta and Vladimir N. Strocov},
journal={Physical Review X},
year={2017},
volume={7},
pages={041067}
}
• Published 6 July 2016
• Physics
• Physical Review X
Chromium dioxide CrO$_2$ belongs to a class of materials called ferromagnetic half-metals, whose peculiar aspect is to act as a metal in one spin orientation and as semiconductor or insulator in the opposite one. Despite numerous experimental and theoretical studies motivated by technologically important applications of this material in spintronics, its fundamental properties such as momentum resolved electron dispersions and Fermi surface have so far remained experimentally inaccessible due to…
16 Citations

## Figures from this paper

Biaxial stress driven tetragonal symmetry breaking and high-temperature ferromagnetic semiconductor from half-metallic CrO 2
• Materials Science
• 2018
It is highly desirable to combine the full spin polarization of carriers with modern semiconductor technology for spintronic applications. For this purpose, one needs good crystalline ferromagnetic
Hidden Mott insulator in metallic PdCrO2
There has been a long-standing debate on the coexistence between itinerant electrons and localized spins in the PdCrO$_2$ delafossite. By means of the charge self-consistent combination of density
Electronic structure and magnetic ordering of NiN and Ni 2 N from first principles
• Physics, Materials Science
Electronic Structure
• 2018
The results of first-principles electronic structure calculations for the nitrogen-rich nickel nitrides ${\rm NiN}$ and ${\rm Ni_2N}$ are presented. The calculations are based on density
Electrons and Polarons at Oxide Interfaces Explored by Soft-X-Ray ARPES
• Physics
• 2018
Soft-X-ray ARPES (SX-ARPES) with its enhanced probing depth and chemical specificity allows access to fundamental electronic structure characteristics—momentum-resolved spectral function, band
Electronic band structure of Ti2O3 thin films studied by angle-resolved photoemission spectroscopy
• Physics, Materials Science
• 2022
Ti 2 O 3 exhibits a unique metal–insulator transition (MIT) at approximately 450 K over a wide temperature range of ~ 150 K. This broad MIT accompanied by lattice deformation differs from the sharp
Electronic properties of candidate type-II Weyl semimetal WTe 2 . A review perspective
• Physics
Electronic Structure
• 2019
Currently, there is a flurry of research interest on materials with an unconventional electronic structure, and we have already seen significant progress in their understanding and engineering
Microscopic origin of ferromagnetism in the trihalides CrCl3 and CrI3
• Physics
Physical Review B
• 2019
Microscopic origin of the ferromagnetic (FM) exchange coupling in CrCl$_3$ and CrI$_3$, their common aspects and differences, are investigated on the basis of density functional theory combined with
Role of spin-orbit coupling in the electronic structure of IrO2
• Physics
Physical Review Materials
• 2018
The delicate interplay of electronic charge, spin, and orbital degrees of freedom is in the heart of many novel phenomena across the transition metal oxide family. Here, by combining high- resolution

## References

SHOWING 1-10 OF 84 REFERENCES
Fermi states and anisotropy of Brillouin zone scattering in the decagonal Al–Ni–Co quasicrystal
• Physics
Nature communications
• 2015
The first observation of the three-dimensional FS and valence band dispersions near EF in decagonal Al70Ni20Co10 (d-AlNiCo) QCs is reported using soft X-ray angle-resolved photoemission spectroscopy and it is shown that the FS, formed by dispersive Al sp-states, has a multicomponent character due to a large contribution from high-order bands.
Intrinsic correlated electronic structure of CrO 2 revealed by hard x-ray photoemission spectroscopy
• Physics
• 2013
Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced screening feature in the Cr 2p3/2 core level
Three-Dimensional Electronic Structure of the Type-II Weyl Semimetal WTe_{2}.
• Physics
Physical review letters
• 2017
A significant sensitivity of the bulk electronic structure of WTe_{2} around the Fermi level to electronic correlations and renormalizations due to self-energy effects, previously neglected in first-principles descriptions is observed.
Anomalous spin polarization and dualistic electronic nature of CrO2
• Physics
• 2003
Spin-resolved O $1s$ x-ray absorption measurements on ${\mathrm{CrO}}_{2}$ reveal that the spin polarization of the states at the Fermi level approaches 100%, providing direct evidence of the
Single-Spin Dirac Fermion and Chern Insulator Based on Simple Oxides.
• Physics
Nano letters
• 2015
Using first-principles calculations, it is shown that a novel class of half semimetallic Dirac electronic phase emerges at the interface CrO2 with TiO2 in both thin film and superlattice configurations, with four spin-polarized Dirac points in momentum-space (k-space) band structure.
Hubbard splitting and electron correlation in the ferromagnetic metal CrO2
• Physics, Materials Science
• 1997
We have studied the electronic structure of ${\mathrm{CrO}}_{2}$ by photoemission spectroscopy and specific heat measurements. The Cr $3d$ band shows a splitting into the upper and lower Hubbard
CrO2: a self-doped double exchange ferromagnet
• Materials Science, Physics
• 1998
With the help of band structure calculations $(\mathrm{LSDA}+U)$ a clear picture of the physics behind the metallic ferromagnetic properties of ${\mathrm{CrO}}_{2}$ is revealed. It is concluded that
High-Quality CrO 2 Nanowires for Dissipation-less Spintronics
• Physics
• 2016
Superconductor-ferromagnet (S-F) hybrids based on half-metallic ferromagnets, such as CrO2, are ideal candidates for superconducting spintronic applications. This is primarily due to the fully
Mechanisms and origins of half-metallic ferromagnetism in CrO2
• Materials Science
• 2015
Chromium dioxide (CrO2) offers a rare example of metallic ferromagnetism among stoichiometric transition-metal oxides. What makes it even more remarkable is the half-metallic electronic structure.
Transport, optical and electronic properties of the half metal CrO2
• Physics
• 1999
The half metal ferromagnet CrO2 has interesting and unusual electronic properties. As in many other cases when kinetic properties are not easily described by the conventional Bloch–Boltzmann theory,