Disorder-driven quantum critical behaviour in CuGeO3 doped with magnetic impurity

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

doi:10.1016/j.physb.2005.01.391

Disorder-driven quantum critical behaviour in CuGeO₃ doped with magnetic impurity

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

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

5 Citations (Scopus)

Abstract

For the CuGeO₃ doped with 1% of Fe, the quantum critical behaviour 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). New effect of the frequency dependence of the critical exponent is discussed.

Original language	English
Pages (from-to)	1315-1317
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.391
Publication status	Published - 2005 Apr 30
Externally published	Yes

Keywords

CuGeO
EPR
Quantum critical phenomena

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2005.01.391

Cite this

Demishev, S. V., Semeno, A. V., Sluchanko, N. E., Samarin, N. A., Pronin, A. A., Glushkov, V. V., Ohta, H., Okubo, S., Kimata, M., Koyama, K., Motokawa, M., & Kuznetsov, A. V. (2005). Disorder-driven quantum critical behaviour in CuGeO₃ doped with magnetic impurity. Physica B: Condensed Matter, 359-361(SPEC. ISS.), 1315-1317. https://doi.org/10.1016/j.physb.2005.01.391

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title = "Disorder-driven quantum critical behaviour in CuGeO3 doped with magnetic impurity",

abstract = "For the CuGeO3 doped with 1% of Fe, the quantum critical behaviour 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). New effect of the frequency dependence of the critical exponent is discussed.",

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

author = "Demishev, {S. V.} and Semeno, {A. V.} and Sluchanko, {N. E.} and Samarin, {N. A.} and Pronin, {A. A.} and Glushkov, {V. V.} 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 Russian Science Support Foundation, programmes “Physics of Nanostructures” and “Strongly Correlated Electrons” of RAS and Grants RFBR 04-02-16574, INTAS 03-51-3036 and Grant-in-Aid no. 13130204.",

year = "2005",

month = apr,

day = "30",

doi = "10.1016/j.physb.2005.01.391",

language = "English",

volume = "359-361",

pages = "1315--1317",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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number = "SPEC. ISS.",

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TY - JOUR

T1 - Disorder-driven quantum critical behaviour in CuGeO3 doped with magnetic impurity

AU - Demishev, S. V.

AU - Semeno, A. V.

AU - Sluchanko, N. E.

AU - Samarin, N. A.

AU - Pronin, A. A.

AU - Glushkov, V. V.

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 Russian Science Support Foundation, programmes “Physics of Nanostructures” and “Strongly Correlated Electrons” of RAS and Grants RFBR 04-02-16574, INTAS 03-51-3036 and Grant-in-Aid no. 13130204.

PY - 2005/4/30

Y1 - 2005/4/30

N2 - For the CuGeO3 doped with 1% of Fe, the quantum critical behaviour 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). New effect of the frequency dependence of the critical exponent is discussed.

AB - For the CuGeO3 doped with 1% of Fe, the quantum critical behaviour 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). New effect of the frequency dependence of the critical exponent is discussed.

KW - CuGeO

KW - EPR

KW - Quantum critical phenomena

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