Detecting halfmetallic electronic structures of spintronic materials in a magnetic field

AbstractBand-gap engineering is one of the fundamental techniques in semiconductor technology and also applicable in next generation spintronics using the spin degree of freedom. To fully utilize the spintronic materials, it is essential to optimize the spin-dependent electronic structures in the operando conditions by applying magnetic and/or electric fields. Here we present an advanced spectroscopic technique to probe the spin-polarized electronic structures by using magnetic circular dichroism (MCD) in resonant inelastic soft X-ray scattering (RIXS) under an external magnetic field. Thanks to the spin-selective dipole-allowed transitions in RIXS-MCD, we have successfully demonstrated the direct evidence of the perfectly spin-polarized electronic structures for the prototypical halfmetallic Heusller alloy $$\hbox {Co}_2\hbox {MnSi}$$ Co 2 MnSi . RIXS-MCD is a promising tool to probe the spin-dependent carriers and band-gap induced in the buried magnetic layers in an element specific way under the operando conditions.

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Detecting halfmetallic electronic structures of spintronic materials in a magnetic field

10.21203/rs.3.rs-637357/v1 ◽

2021 ◽

Author(s):

Hidenori Fujiwara ◽

Rie Umetsu ◽

Fumiaki Kuroda ◽

Jun Miyawaki ◽

Toshiyuki Kashiuchi ◽

...

Keyword(s):

Magnetic Field ◽

Band Gap ◽

Electric Fields ◽

Electronic Structures ◽

Degrees Of Freedom ◽

Magnetic Circular Dichroism ◽

Spectroscopic Technique ◽

Promising Tool ◽

Magnetic Layers ◽

Spin Polarized

Abstract Band-gap engineering is one of the fundamental techniques in semiconductor technology and also applicable in the next generation spintronics using the spin degrees of freedom. To fully utilize the spintronic material, it is essential to optimize the spin-dependent electronic structures in the operando conditions by applying the magnetic and/or electric fields. Here we present a new spectroscopic technique to probe the spin-polarized electronic structures by using magnetic circular dichroism (MCD) in the resonant inelastic soft X-ray scattering (RIXS) under an external magnetic field. Thanks to the spin-selective dipole-allowed transitions in the RIXS-MCD, we have successfully demonstrated the direct evidence of the perfectly spin-polarized electronic structures for the prototypical halfmetallic Heusller alloy, Co2MnSi. The RIXS-MCD is a promising tool to probe the spin-dependent carriers and band-gap with element specific way induced in the buried magnetic layers under the operando conditions.

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ELECTRONIC-STRUCTURE ENGINEERING OF CARBON NANOTUBES

NANO ◽

10.1142/s1793292006000136 ◽

2006 ◽

Vol 01 (02) ◽

pp. 115-138 ◽

Cited By ~ 47

Author(s):

KAY HYEOK AN ◽

YOUNG HEE LEE

Keyword(s):

Carbon Nanotubes ◽

Electronic Structure ◽

Band Gap ◽

Electronic Structures ◽

Analytical Techniques ◽

Band Gap Engineering ◽

Transparent Conducting Films ◽

The Subject ◽

Chirality Separation ◽

Structure Engineering

A review for controlling electronic structures and chirality separation of carbon nanotubes (CNTs) is presented with the subject divided into three topics. The first topic introduces the electronic structures of CNTs and the analytical techniques to identify the chirality of CNTs. The second topic discusses band gap engineering techniques using the sidewall functionalization of CNTs. The third topic concerns several approaches in chiral and diameter-dependent separation of CNTs. The electronic-structure engineering is of critical importance for a variety of technological applications of CNTs including, for example, field-effect transistor, chemical/bio-nanosensors, the electrical conductivity and charge dissipation in polymer/CNT composites, and flexible transparent conducting films. This paper is intended to concisely review the recent advances in the experimental and theoretical CNT researches concerned with the band gap engineering and chiral separation techniques of CNTs.

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Band gap engineering of silicene zigzag nanoribbons with perpendicular electric fields: a theoretical study

Journal of Physics Condensed Matter ◽

10.1088/0953-8984/24/45/455302 ◽

2012 ◽

Vol 24 (45) ◽

pp. 455302 ◽

Cited By ~ 27

Author(s):

Yunye Liang ◽

Vei Wang ◽

Hiroshi Mizuseki ◽

Yoshiyuki Kawazoe

Keyword(s):

Band Gap ◽

Electric Fields ◽

Theoretical Study ◽

Band Gap Engineering

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Band gap engineering of SnS2 nanosheets by anion–anion codoping for visible-light photocatalysis

RSC Advances ◽

10.1039/c7ra12058c ◽

2018 ◽

Vol 8 (6) ◽

pp. 3304-3311 ◽

Cited By ~ 15

Author(s):

Xiaoxia Zhu ◽

Xukai Luo ◽

Hongkuan Yuan ◽

Hong Chen ◽

Chunling Tian

Keyword(s):

Visible Light ◽

Band Gap ◽

Electronic Structures ◽

Visible Light Photocatalysis ◽

Band Gap Engineering

We have systematically investigated the electronic structures of anionic monodoped (N and P) and codoped (N–N, N–P, and P–P) SnS2 nanosheets for the design of efficient water redox photocatalysts.

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