Inhomogeneous broadening of the EPR signal of Yb3+ ions in domain walls of lightly doped antiferromagnetic cuprates
Abstract
Distortion of the long-range antiferromagnetic order in the YBa2Cu3O6+y is investigated by the electron paramagnetic resonance (EPR) measurements for y=0.1-0.4. In the case of the doping level y=0.2, 0.3 the EPR signal consists of narrow and broad lines, which we relate to formation of the charged domain walls. Our theoretical analysis of the inhomogeneous EPR broadening due to the local antiferromagnetic order distortion in domain walls is well consistent with experimental results for the case of coplanar elliptical domain walls.
Supporting agencies: This work was supported by the Swiss National Science Foundation, the SCOPES grant No. IZ73Z0_128242, and partially by the Ministry of Education and Science of the Russian Federation.
About the Authors
A. A. Vishina
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya, 18, Kazan 420008
A. Maisuradze
Physik-Institut der Universität Zürich
Switzerland
Switzerland
Winterhurerstrasse 190, ZH-8057
A. Shengelaya
Tbilisi State University
Georgia
Georgia
Chavchavadze av. 3, GE-0128
B. I. Kochelaev
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya, 18, Kazan 420008
H. Keller
Physik-Institut der Universität Zürich
Switzerland
Switzerland
Winterhurerstrasse 190, ZH-8057
References
1. Kochelaev B.I., Teitel'baum G.B. Superconductivity in Complex Systems, edited by Müller K.A. and Bussmann-Holder A., Springer-Verlag, Berlin Heidelberg, pp. 203-266 (2005)
2. Vishina A.A., Maisuradze A., Shengelaya A., Kochelaev B.I., Keller H. J. Phys.: Conf. Ser. 394, 012014 (2012)
3. Vishina A.A., Maisuradze A. Magn. Reson. Solids 14, 12101 (2012)
4. Shamoto S., Sato M., Tranquada J.M., Sternlieb B.J., Shirane G. Phys. Rev. B 48, 13817 (1993)
5. Su W.P., Chen X.Y. Phys. Rev. B 38, 8879 (1988)
6. Poilblanc D., Rice T.M. Phys. Rev. B 39, 9749 (1989)
7. Verges J.A., Louis E., Lomdahl P.S., Guinea F., Bishop A.R. Phys. Rev. B 43, 6099 (1991)
8. Shraiman B.I., Siggia E.D. Phys. Rev. Lett. 61, 467 (1988)
9. Giamarchi T., Lhuillier C. Phys. Rev. B 42, 10641 (1990)
10. Seibold G., Sigmund E., Hizhnyakov V. Phys. Rev. B 57, 6937 (1998)
11. Zachar O., Kivelson S.A., Emery V.J. Phys. Rev. B 57, 1422 (1998)
12. Seibold G. Phys. Rev. B 58, 15520 (1998)
Review
For citations:
Vishina A.A., Maisuradze A., Shengelaya A., Kochelaev B.I., Keller H. Inhomogeneous broadening of the EPR signal of Yb3+ ions in domain walls of lightly doped antiferromagnetic cuprates. Magnetic Resonance in Solids. 2012;14(1):12102 (5 pp.).
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