First-principles calculations of the magneto-optical Kerr effect in L10-type ordered alloys TM-X (TM = Mn, Fe, Co, X = Pt, Au)

M. Yamaguchi, T. Kusakabe, Kentaro Kyuno, S. Asano

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The magneto-optical polar Kerr effect of L10(CuAu)-type ordered alloys TM-X (TM = Mn, Fe, Co; X = Pt, Au) was calculated from the electronic structures given by the first-principles LMTO-ASA method. The calculated results agreed reasonably well with the experimental results. The important optical transitions were identified by detailed analysis of the electronic structures and transition matrix elements. As an example, it was found that the peak structure at 4 eV in the Kerr spectra of L10-FeAu mainly originated from the d↓±2 → f↓±3 transitions on Au, in which the strength of the d↓-2 → f↓-3 transition was much larger than the d↓+2 → f↓+3 transition due to the large spin-orbit splitting in Au(5d↓±2)-band. In this transition, the final state Au(5f↓±3) is a small tail state hybridized with the unoccupied Fe(3d) state. Thus, the transition can simply be described as the Au(5d) → Fe(3d) transition as predicted by Sato et al. [J. Magn. Soc. Japan 20(S1) (1996) 35]. Another type of transition p↓±1 → d↓±2 on Pt was found to be very strong and plays an important role in the Kerr spectra of TM-Pt, since there are many final states (Pt(5d)) in the transition due to the spin polarization in Pt(5d)-bands.

Original languageEnglish
Pages (from-to)17-34
Number of pages18
JournalPhysica B: Condensed Matter
Volume270
Issue number1-2
DOIs
Publication statusPublished - 1999 Oct 1
Externally publishedYes

Fingerprint

Optical Kerr effect
Kerr effects
Electronic structure
Spin polarization
Optical transitions
Electron transitions
Orbits
electronic structure
acetylsalicylic acid
optical transition
Japan
orbits

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

First-principles calculations of the magneto-optical Kerr effect in L10-type ordered alloys TM-X (TM = Mn, Fe, Co, X = Pt, Au). / Yamaguchi, M.; Kusakabe, T.; Kyuno, Kentaro; Asano, S.

In: Physica B: Condensed Matter, Vol. 270, No. 1-2, 01.10.1999, p. 17-34.

Research output: Contribution to journalArticle

@article{0df64b6d09864cccbca82223320887bd,
title = "First-principles calculations of the magneto-optical Kerr effect in L10-type ordered alloys TM-X (TM = Mn, Fe, Co, X = Pt, Au)",
abstract = "The magneto-optical polar Kerr effect of L10(CuAu)-type ordered alloys TM-X (TM = Mn, Fe, Co; X = Pt, Au) was calculated from the electronic structures given by the first-principles LMTO-ASA method. The calculated results agreed reasonably well with the experimental results. The important optical transitions were identified by detailed analysis of the electronic structures and transition matrix elements. As an example, it was found that the peak structure at 4 eV in the Kerr spectra of L10-FeAu mainly originated from the d↓±2 → f↓±3 transitions on Au, in which the strength of the d↓-2 → f↓-3 transition was much larger than the d↓+2 → f↓+3 transition due to the large spin-orbit splitting in Au(5d↓±2)-band. In this transition, the final state Au(5f↓±3) is a small tail state hybridized with the unoccupied Fe(3d↓) state. Thus, the transition can simply be described as the Au(5d↓) → Fe(3d↓) transition as predicted by Sato et al. [J. Magn. Soc. Japan 20(S1) (1996) 35]. Another type of transition p↓±1 → d↓±2 on Pt was found to be very strong and plays an important role in the Kerr spectra of TM-Pt, since there are many final states (Pt(5d↓)) in the transition due to the spin polarization in Pt(5d)-bands.",
author = "M. Yamaguchi and T. Kusakabe and Kentaro Kyuno and S. Asano",
year = "1999",
month = "10",
day = "1",
doi = "10.1016/S0921-4526(99)00169-6",
language = "English",
volume = "270",
pages = "17--34",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - First-principles calculations of the magneto-optical Kerr effect in L10-type ordered alloys TM-X (TM = Mn, Fe, Co, X = Pt, Au)

AU - Yamaguchi, M.

AU - Kusakabe, T.

AU - Kyuno, Kentaro

AU - Asano, S.

PY - 1999/10/1

Y1 - 1999/10/1

N2 - The magneto-optical polar Kerr effect of L10(CuAu)-type ordered alloys TM-X (TM = Mn, Fe, Co; X = Pt, Au) was calculated from the electronic structures given by the first-principles LMTO-ASA method. The calculated results agreed reasonably well with the experimental results. The important optical transitions were identified by detailed analysis of the electronic structures and transition matrix elements. As an example, it was found that the peak structure at 4 eV in the Kerr spectra of L10-FeAu mainly originated from the d↓±2 → f↓±3 transitions on Au, in which the strength of the d↓-2 → f↓-3 transition was much larger than the d↓+2 → f↓+3 transition due to the large spin-orbit splitting in Au(5d↓±2)-band. In this transition, the final state Au(5f↓±3) is a small tail state hybridized with the unoccupied Fe(3d↓) state. Thus, the transition can simply be described as the Au(5d↓) → Fe(3d↓) transition as predicted by Sato et al. [J. Magn. Soc. Japan 20(S1) (1996) 35]. Another type of transition p↓±1 → d↓±2 on Pt was found to be very strong and plays an important role in the Kerr spectra of TM-Pt, since there are many final states (Pt(5d↓)) in the transition due to the spin polarization in Pt(5d)-bands.

AB - The magneto-optical polar Kerr effect of L10(CuAu)-type ordered alloys TM-X (TM = Mn, Fe, Co; X = Pt, Au) was calculated from the electronic structures given by the first-principles LMTO-ASA method. The calculated results agreed reasonably well with the experimental results. The important optical transitions were identified by detailed analysis of the electronic structures and transition matrix elements. As an example, it was found that the peak structure at 4 eV in the Kerr spectra of L10-FeAu mainly originated from the d↓±2 → f↓±3 transitions on Au, in which the strength of the d↓-2 → f↓-3 transition was much larger than the d↓+2 → f↓+3 transition due to the large spin-orbit splitting in Au(5d↓±2)-band. In this transition, the final state Au(5f↓±3) is a small tail state hybridized with the unoccupied Fe(3d↓) state. Thus, the transition can simply be described as the Au(5d↓) → Fe(3d↓) transition as predicted by Sato et al. [J. Magn. Soc. Japan 20(S1) (1996) 35]. Another type of transition p↓±1 → d↓±2 on Pt was found to be very strong and plays an important role in the Kerr spectra of TM-Pt, since there are many final states (Pt(5d↓)) in the transition due to the spin polarization in Pt(5d)-bands.

UR - http://www.scopus.com/inward/record.url?scp=0033212459&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033212459&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(99)00169-6

DO - 10.1016/S0921-4526(99)00169-6

M3 - Article

VL - 270

SP - 17

EP - 34

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 1-2

ER -