Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3

Kazuma Hirota, Masashi Hase, Jun Akimitsu, Takatsugu Masuda, Kunimitsu Uchinokura, Gen Shirane

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The magnetic excitations of CuGe1-xSixO3 single crystals (x = 0.011 and 0.03) have been studied by inelastic neutron-scattering techniques. We confirm the coexistence of the antiferromagnetic and spin-Peierls excitations as well as a splitting of the antiferromagnetic excitation peak at the magnetic zone center (q = 0) due to orthorhombic anisotropy. The q dependence of the antiferromagnetic spin-wave width Γ scales well with q2 for small q (q <0.1 Å-1). We also find that the spin-wave velocity increases as the size of induced magnetic moment becomes larger. These experimental results strongly support recent theoretical predictions by Saito and Fukuyama.

Original languageEnglish
Pages (from-to)645-650
Number of pages6
JournalJournal of the Physical Society of Japan
Volume67
Issue number2
Publication statusPublished - Feb 1998
Externally publishedYes

Fingerprint

magnons
excitation
inelastic scattering
neutron scattering
magnetic moments
anisotropy
single crystals
predictions

Keywords

  • Antiferromagnetic spin wave
  • CuGeSiO
  • Spin-Peierls transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hirota, K., Hase, M., Akimitsu, J., Masuda, T., Uchinokura, K., & Shirane, G. (1998). Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3. Journal of the Physical Society of Japan, 67(2), 645-650.

Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3. / Hirota, Kazuma; Hase, Masashi; Akimitsu, Jun; Masuda, Takatsugu; Uchinokura, Kunimitsu; Shirane, Gen.

In: Journal of the Physical Society of Japan, Vol. 67, No. 2, 02.1998, p. 645-650.

Research output: Contribution to journalArticle

Hirota, K, Hase, M, Akimitsu, J, Masuda, T, Uchinokura, K & Shirane, G 1998, 'Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3', Journal of the Physical Society of Japan, vol. 67, no. 2, pp. 645-650.
Hirota, Kazuma ; Hase, Masashi ; Akimitsu, Jun ; Masuda, Takatsugu ; Uchinokura, Kunimitsu ; Shirane, Gen. / Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3. In: Journal of the Physical Society of Japan. 1998 ; Vol. 67, No. 2. pp. 645-650.
@article{2a17c0e5626f4a5bb643191ba41a759e,
title = "Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3",
abstract = "The magnetic excitations of CuGe1-xSixO3 single crystals (x = 0.011 and 0.03) have been studied by inelastic neutron-scattering techniques. We confirm the coexistence of the antiferromagnetic and spin-Peierls excitations as well as a splitting of the antiferromagnetic excitation peak at the magnetic zone center (q = 0) due to orthorhombic anisotropy. The q dependence of the antiferromagnetic spin-wave width Γ scales well with q2 for small q (q <0.1 {\AA}-1). We also find that the spin-wave velocity increases as the size of induced magnetic moment becomes larger. These experimental results strongly support recent theoretical predictions by Saito and Fukuyama.",
keywords = "Antiferromagnetic spin wave, CuGeSiO, Spin-Peierls transition",
author = "Kazuma Hirota and Masashi Hase and Jun Akimitsu and Takatsugu Masuda and Kunimitsu Uchinokura and Gen Shirane",
year = "1998",
month = "2",
language = "English",
volume = "67",
pages = "645--650",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "2",

}

TY - JOUR

T1 - Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3

AU - Hirota, Kazuma

AU - Hase, Masashi

AU - Akimitsu, Jun

AU - Masuda, Takatsugu

AU - Uchinokura, Kunimitsu

AU - Shirane, Gen

PY - 1998/2

Y1 - 1998/2

N2 - The magnetic excitations of CuGe1-xSixO3 single crystals (x = 0.011 and 0.03) have been studied by inelastic neutron-scattering techniques. We confirm the coexistence of the antiferromagnetic and spin-Peierls excitations as well as a splitting of the antiferromagnetic excitation peak at the magnetic zone center (q = 0) due to orthorhombic anisotropy. The q dependence of the antiferromagnetic spin-wave width Γ scales well with q2 for small q (q <0.1 Å-1). We also find that the spin-wave velocity increases as the size of induced magnetic moment becomes larger. These experimental results strongly support recent theoretical predictions by Saito and Fukuyama.

AB - The magnetic excitations of CuGe1-xSixO3 single crystals (x = 0.011 and 0.03) have been studied by inelastic neutron-scattering techniques. We confirm the coexistence of the antiferromagnetic and spin-Peierls excitations as well as a splitting of the antiferromagnetic excitation peak at the magnetic zone center (q = 0) due to orthorhombic anisotropy. The q dependence of the antiferromagnetic spin-wave width Γ scales well with q2 for small q (q <0.1 Å-1). We also find that the spin-wave velocity increases as the size of induced magnetic moment becomes larger. These experimental results strongly support recent theoretical predictions by Saito and Fukuyama.

KW - Antiferromagnetic spin wave

KW - CuGeSiO

KW - Spin-Peierls transition

UR - http://www.scopus.com/inward/record.url?scp=0032373984&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032373984&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032373984

VL - 67

SP - 645

EP - 650

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 2

ER -