Oxygen Isotope Effects on Tc Related to Polaronic Superconductivity in Underdoped Cuprates
Affiliation(s)
Institute of Physics, Kazan Federal University, Kremlevskaya 18, Kazan, Russia. Physik-Institut der Universit?t Zürich, Winterthurerstr, Zürich, Switzerland . Department of Physics, Tbilisi State University, Chavchavadze, Tbilisi, Georgia.
Institute of Physics, Kazan Federal University, Kremlevskaya 18, Kazan, Russia. Physik-Institut der Universit?t Zürich, Winterthurerstr, Zürich, Switzerland . Department of Physics, Tbilisi State University, Chavchavadze, Tbilisi, Georgia.
ABSTRACT
The planar oxygen isotope effect on Tc observed in copper oxide superconductors is remarkable in that it increases from near nil at optimal doping to a value twice that derived from BCS theory in the underdoped region. This behavior is quantitatively followed by a formula proposed by Kresin and Wolf in 1994 for polarons along the c-axis. Herein it is revisited in a more transparent way, and it is pointed out that the heterogeneity of pairing is relevant and has to be taken into account to explain the unusual planar isotope effects on Tc in underdoped cuprates.
Cite this paper
Kochelaev, B. , Müller, K. and Shengelaya, A. (2014) Oxygen Isotope Effects on Tc Related to Polaronic Superconductivity in Underdoped Cuprates. Journal of Modern Physics, 5, 473-476. doi: 10.4236/jmp.2014.56057.
Kochelaev, B. , Müller, K. and Shengelaya, A. (2014) Oxygen Isotope Effects on Tc Related to Polaronic Superconductivity in Underdoped Cuprates. Journal of Modern Physics, 5, 473-476. doi: 10.4236/jmp.2014.56057.
References
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http://dx.doi.org/10.1103/PhysRevB.44.5318 [5] Khasanov, R., Shengelaya, A., Morenzoni, E., Conder, K., Savic, I.M. and Keller, H. (2004) Journal of Physics: Condensing Material, 16, S4439-S4455. http://dx.doi.org/10.1088/0953-8984/16/40/003 [6] Bussmann-Holder, A. and Keller, H. (2005) European Physical Journal B, 44, 487-490.
http://dx.doi.org/10.1140/epjb/e2005-00148-9 [7] Bednorz, J.G. and Muller, K.A. (1986) Zeitschrift fur Physik B Condensed Matter, 64, 189-193.
http://dx.doi.org/10.1007/BF01303701 [8] Keller, H., Bussmann-Holder, A. and Muller, K.A. (2008) Materials Today, 11, 38-46.
http://dx.doi.org/10.1016/S1369-7021(08)70178-0 [9] Weyeneth, S. and Muller, K.A. (2011) Journal of Superconductivity and Novel Magnetism, 24, 1235-1239.
http://dx.doi.org/10.1007/s10948-011-1151-3 [10] Kresin, V.Z. and Wolf, S.A. (1994) Physical Review B, 49, 3652-3654. http://dx.doi.org/10.1103/PhysRevB.49.3652 [11] Zech, D., Keller, H., Conder, K., Kaldis, E., Liarokapis, E., Poulakis, N. and Muller, K.A. (1994) Nature (London), 371, 681-683. http://dx.doi.org/10.1038/371681a0 [12] Kresin, V. (2010) Journal of Superconductivity and Novel Magnetism, 23, 179-182.
http://dx.doi.org/10.1007/s10948-009-0591-5 [13] Shengelaya, A., Bruun, M., Kochelaev, B.I., Safina, A., Conder, K. and Muller, K.A. (2004) Physical Review Letters, 93, 017001. http://dx.doi.org/10.1103/PhysRevLett.93.017001 [14] Mihailovic, D., Kabanov, V.V. and Muller, K.A. (2002) Europhysical Letters, 57, 254-259.
http://dx.doi.org/10.1209/epl/i2002-00569-0
[1] Tinkham, M. (1975) Introduction to Superconductivity. Mc Graw Hill Inc., New York. [2] Battlogg, B., Cava, R.J., Jayaraman, A., van Dover, R.B., Kourouklis, G.A., Sunshine, S., Murphy, D.W., Rupp, L.W., Chen, H.S., White, A., Short, K.T., Mujsce, A.M. and Rietman, E.A. (1987) Physical Review Letters, 58, 2333-2336. [3] Schrieffer, J. R. and Brooks J.S. (2007) Handbook of High-Temperature Superconductivity. Springer Science + Business Media, LLC, New York. [4] Franck, J.P., Jung, J., Mohamed, M.A.-K., Gygax, S. and Sproule, G.I. (1991) Physical Review B, 44, 5318-5321.
http://dx.doi.org/10.1103/PhysRevB.44.5318 [5] Khasanov, R., Shengelaya, A., Morenzoni, E., Conder, K., Savic, I.M. and Keller, H. (2004) Journal of Physics: Condensing Material, 16, S4439-S4455. http://dx.doi.org/10.1088/0953-8984/16/40/003 [6] Bussmann-Holder, A. and Keller, H. (2005) European Physical Journal B, 44, 487-490.
http://dx.doi.org/10.1140/epjb/e2005-00148-9 [7] Bednorz, J.G. and Muller, K.A. (1986) Zeitschrift fur Physik B Condensed Matter, 64, 189-193.
http://dx.doi.org/10.1007/BF01303701 [8] Keller, H., Bussmann-Holder, A. and Muller, K.A. (2008) Materials Today, 11, 38-46.
http://dx.doi.org/10.1016/S1369-7021(08)70178-0 [9] Weyeneth, S. and Muller, K.A. (2011) Journal of Superconductivity and Novel Magnetism, 24, 1235-1239.
http://dx.doi.org/10.1007/s10948-011-1151-3 [10] Kresin, V.Z. and Wolf, S.A. (1994) Physical Review B, 49, 3652-3654. http://dx.doi.org/10.1103/PhysRevB.49.3652 [11] Zech, D., Keller, H., Conder, K., Kaldis, E., Liarokapis, E., Poulakis, N. and Muller, K.A. (1994) Nature (London), 371, 681-683. http://dx.doi.org/10.1038/371681a0 [12] Kresin, V. (2010) Journal of Superconductivity and Novel Magnetism, 23, 179-182.
http://dx.doi.org/10.1007/s10948-009-0591-5 [13] Shengelaya, A., Bruun, M., Kochelaev, B.I., Safina, A., Conder, K. and Muller, K.A. (2004) Physical Review Letters, 93, 017001. http://dx.doi.org/10.1103/PhysRevLett.93.017001 [14] Mihailovic, D., Kabanov, V.V. and Muller, K.A. (2002) Europhysical Letters, 57, 254-259.
http://dx.doi.org/10.1209/epl/i2002-00569-0