Low-temperature study of the quantum critical phenomena in CuGeO 3:Fe

S. V. Demishev; A. V. Semeno; A. A. Pronin; N. E. Sluchanko; N. A. Samarin; H. Ohta; S. Okubo; M. Kimata; K. Koyama; M. Motokawa; A. V. Kuznetsov

doi:10.1016/j.jmmm.2005.10.117

Low-temperature study of the quantum critical phenomena in CuGeO ₃:Fe

S. V. Demishev, A. V. Semeno, A. A. Pronin, N. E. Sluchanko, N. A. Samarin, H. Ohta, S. Okubo, M. Kimata, K. Koyama, M. Motokawa, A. V. Kuznetsov

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

For the CuGeO₃ single crystals doped with 1% of Fe the quantum critical behavior in a wide temperature range 1-40 K is reported. The critical exponents for susceptibility along different crystallographic axes are determined: α=0.34 (B||a and B||c) and α=0.31 (B||b). The description of the temperature dependences of the linewidth and g-factor could be obtained in the Oshikawa-Affleck theory assuming that staggered component of the magnetic moment is located predominantly along b-axis. Possible arguments favoring the competition between effects of the staggered field and antiferromagnetic ordering are provided.

Original language	English
Pages (from-to)	e346-e349
Journal	Journal of Magnetism and Magnetic Materials
Volume	300
Issue number	1
DOIs	https://doi.org/10.1016/j.jmmm.2005.10.117
Publication status	Published - 2006 May
Externally published	Yes
Event	Third International Symposium on Magnetism 2005 - Duration: 2005 Jun 26 → 2005 Jun 30

Keywords

CuGeO
EPR
Quantum critical phenomena

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2005.10.117

Cite this

@article{98e70129d221459f866b8307590e69dd,

title = "Low-temperature study of the quantum critical phenomena in CuGeO 3:Fe",

abstract = "For the CuGeO3 single crystals doped with 1% of Fe the quantum critical behavior in a wide temperature range 1-40 K is reported. The critical exponents for susceptibility along different crystallographic axes are determined: α=0.34 (B||a and B||c) and α=0.31 (B||b). The description of the temperature dependences of the linewidth and g-factor could be obtained in the Oshikawa-Affleck theory assuming that staggered component of the magnetic moment is located predominantly along b-axis. Possible arguments favoring the competition between effects of the staggered field and antiferromagnetic ordering are provided.",

keywords = "CuGeO, EPR, Quantum critical phenomena",

author = "Demishev, {S. V.} and Semeno, {A. V.} and Pronin, {A. A.} and Sluchanko, {N. E.} and Samarin, {N. A.} and H. Ohta and S. Okubo and M. Kimata and K. Koyama and M. Motokawa and Kuznetsov, {A. V.}",

note = "Funding Information: Authors acknowledge support from “Strongly Correlated Electrons” of RAS and grants RFBR 04-02-16574 and INTAS 03-51-3036. This work was partly supported by Hyogo Science and Technology Association and also by Grant-in-Aid for Science Research on Priority Areas (No. 13130204) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.; Third International Symposium on Magnetism 2005 ; Conference date: 26-06-2005 Through 30-06-2005",

year = "2006",

month = may,

doi = "10.1016/j.jmmm.2005.10.117",

language = "English",

volume = "300",

pages = "e346--e349",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Low-temperature study of the quantum critical phenomena in CuGeO 3:Fe

AU - Demishev, S. V.

AU - Semeno, A. V.

AU - Pronin, A. A.

AU - Sluchanko, N. E.

AU - Samarin, N. A.

AU - Ohta, H.

AU - Okubo, S.

AU - Kimata, M.

AU - Koyama, K.

AU - Motokawa, M.

AU - Kuznetsov, A. V.

N1 - Funding Information: Authors acknowledge support from “Strongly Correlated Electrons” of RAS and grants RFBR 04-02-16574 and INTAS 03-51-3036. This work was partly supported by Hyogo Science and Technology Association and also by Grant-in-Aid for Science Research on Priority Areas (No. 13130204) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2006/5

Y1 - 2006/5

N2 - For the CuGeO3 single crystals doped with 1% of Fe the quantum critical behavior in a wide temperature range 1-40 K is reported. The critical exponents for susceptibility along different crystallographic axes are determined: α=0.34 (B||a and B||c) and α=0.31 (B||b). The description of the temperature dependences of the linewidth and g-factor could be obtained in the Oshikawa-Affleck theory assuming that staggered component of the magnetic moment is located predominantly along b-axis. Possible arguments favoring the competition between effects of the staggered field and antiferromagnetic ordering are provided.

AB - For the CuGeO3 single crystals doped with 1% of Fe the quantum critical behavior in a wide temperature range 1-40 K is reported. The critical exponents for susceptibility along different crystallographic axes are determined: α=0.34 (B||a and B||c) and α=0.31 (B||b). The description of the temperature dependences of the linewidth and g-factor could be obtained in the Oshikawa-Affleck theory assuming that staggered component of the magnetic moment is located predominantly along b-axis. Possible arguments favoring the competition between effects of the staggered field and antiferromagnetic ordering are provided.

KW - CuGeO

KW - EPR

KW - Quantum critical phenomena

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DO - 10.1016/j.jmmm.2005.10.117

M3 - Conference article

AN - SCOPUS:33644670626

SN - 0304-8853

VL - 300

SP - e346-e349

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1

T2 - Third International Symposium on Magnetism 2005

Y2 - 26 June 2005 through 30 June 2005

ER -