High field ESR study of BaCu2(Si1-xGex)2O7 single crystal

Hitoshi Ohta; Kanji Kawakami; Yuji Inagaki; Susumu Okubo; Takashi Kunimoto; Zenji Hiroi

doi:10.1143/ptps.145.95

High field ESR study of BaCu₂(Si_1-xGe_x)₂O₇ single crystal

Hitoshi Ohta, Kanji Kawakami, Yuji Inagaki, Susumu Okubo, Takashi Kunimoto, Zenji Hiroi

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Recent advance of a field theoretical approach of a low-temperature electron spin resonance (ESR) in S=1/2 antiferromagnetic chain, which has Dzyaloshinskii-Moriya (DM) interactions and staggered g-tensor sites, by Oshikawa and Affleck (OA) suggests peculiar magnetic field dependence of ESR. Although BaCu₂(Si_1-xGe_x)₂O₇ is an antiferromagnetic chain system with mixed antiferromagnetic and ferromagnetic interehain interactions, we found that x=0.65 substance shows the peculiar field dependence of ESR predicted by OA theory. The temperature dependence of the line width showed the power-law dependence and strong field dependence in the gapless spinon regime which can be well interpreted by OA theory. The temperature dependence of the resonance shift turned out to be also consistent with OA theory. These results are also discussed in connection with Cu-Benzoate which is considered as a model substance of OA theory.

Original language	English
Pages (from-to)	95-100
Number of pages	6
Journal	Progress of Theoretical Physics
Issue number	145 SUPPL.
DOIs	https://doi.org/10.1143/ptps.145.95
Publication status	Published - 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1143/ptps.145.95

Cite this

@article{cae7d001fabb40f7930882329dcd0a09,

title = "High field ESR study of BaCu2(Si1-xGex)2O7 single crystal",

abstract = "Recent advance of a field theoretical approach of a low-temperature electron spin resonance (ESR) in S=1/2 antiferromagnetic chain, which has Dzyaloshinskii-Moriya (DM) interactions and staggered g-tensor sites, by Oshikawa and Affleck (OA) suggests peculiar magnetic field dependence of ESR. Although BaCu2(Si1-xGex)2O7 is an antiferromagnetic chain system with mixed antiferromagnetic and ferromagnetic interehain interactions, we found that x=0.65 substance shows the peculiar field dependence of ESR predicted by OA theory. The temperature dependence of the line width showed the power-law dependence and strong field dependence in the gapless spinon regime which can be well interpreted by OA theory. The temperature dependence of the resonance shift turned out to be also consistent with OA theory. These results are also discussed in connection with Cu-Benzoate which is considered as a model substance of OA theory.",

author = "Hitoshi Ohta and Kanji Kawakami and Yuji Inagaki and Susumu Okubo and Takashi Kunimoto and Zenji Hiroi",

year = "2002",

doi = "10.1143/ptps.145.95",

language = "English",

pages = "95--100",

journal = "Progress of Theoretical Physics",

issn = "0033-068X",

publisher = "Published for the Research Institute for Fundamental Physics by Physical Society of Japan",

number = "145 SUPPL.",

}

TY - JOUR

T1 - High field ESR study of BaCu2(Si1-xGex)2O7 single crystal

AU - Ohta, Hitoshi

AU - Kawakami, Kanji

AU - Inagaki, Yuji

AU - Okubo, Susumu

AU - Kunimoto, Takashi

AU - Hiroi, Zenji

PY - 2002

Y1 - 2002

N2 - Recent advance of a field theoretical approach of a low-temperature electron spin resonance (ESR) in S=1/2 antiferromagnetic chain, which has Dzyaloshinskii-Moriya (DM) interactions and staggered g-tensor sites, by Oshikawa and Affleck (OA) suggests peculiar magnetic field dependence of ESR. Although BaCu2(Si1-xGex)2O7 is an antiferromagnetic chain system with mixed antiferromagnetic and ferromagnetic interehain interactions, we found that x=0.65 substance shows the peculiar field dependence of ESR predicted by OA theory. The temperature dependence of the line width showed the power-law dependence and strong field dependence in the gapless spinon regime which can be well interpreted by OA theory. The temperature dependence of the resonance shift turned out to be also consistent with OA theory. These results are also discussed in connection with Cu-Benzoate which is considered as a model substance of OA theory.

AB - Recent advance of a field theoretical approach of a low-temperature electron spin resonance (ESR) in S=1/2 antiferromagnetic chain, which has Dzyaloshinskii-Moriya (DM) interactions and staggered g-tensor sites, by Oshikawa and Affleck (OA) suggests peculiar magnetic field dependence of ESR. Although BaCu2(Si1-xGex)2O7 is an antiferromagnetic chain system with mixed antiferromagnetic and ferromagnetic interehain interactions, we found that x=0.65 substance shows the peculiar field dependence of ESR predicted by OA theory. The temperature dependence of the line width showed the power-law dependence and strong field dependence in the gapless spinon regime which can be well interpreted by OA theory. The temperature dependence of the resonance shift turned out to be also consistent with OA theory. These results are also discussed in connection with Cu-Benzoate which is considered as a model substance of OA theory.

UR - http://www.scopus.com/inward/record.url?scp=0036993616&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036993616&partnerID=8YFLogxK

U2 - 10.1143/ptps.145.95

DO - 10.1143/ptps.145.95

M3 - Article

AN - SCOPUS:0036993616

SN - 0033-068X

SP - 95

EP - 100

JO - Progress of Theoretical Physics

JF - Progress of Theoretical Physics

IS - 145 SUPPL.

ER -

High field ESR study of BaCu₂(Si_1-xGe_x)₂O₇ single crystal

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this