Abstract
We study the spin susceptibility χ of a small metallic grain with pairing interactions. We find that the temperature dependence of χ shows novel features associated with the interplay between parity effects and superconducting fluctuations. Even in the case of an ultrasmall grain far away from the superconducting transition, pair fluctuations lead to a re-entrant behaviour of χ.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
Bibliography
See, e.g., Mesoscopic Electron Transport, edited by L. Kouwenhoven, G. Schön, and L. Sohn (Kluwer Ac. Publ., Dordrecht, 1997).
D.V. Averin and Yu.V. Nazarov, Phys. Rev. Lett. 69, 1993 (1992).
M.T. Tuominen et al., Phys. Rev. Lett. 69, 1997 (1992).
B. Mühlschlegel, D.J. Scalapino, and R. Denton, Phys. Rev. B 6, 1767 (1972).
P.W. Anderson, J. Phys. Chem. Solids 11, 28 (1959).
D.C. Ralph, C.T. Black, and M. Tinkham, Phys. Rev. Lett. 74, 3241 (1995); C.T. Black, D.C. Ralph, and M. Tinkham, ibid. Phys. Rev. Lett. 76, 688 (1996).
J. von Delft et al., Phys. Rev. Lett. 77, 3189 (1996); R.A. Smith and V. Ambegaokar, ibid. Phys. Rev. Lett., 77 4962 (1996).
K.A. Matveev and A.I. Larkin, Phys. Rev. Lett. 78, 3749 (1997).
A. Mastellone, G. Falci, and R. Fazio, Phys. Rev. Lett. 80, 4542 (1998); S.D. Berger and B.I. Halperin, Phys. Rev. B 58 5213 (1998).
Y. Volotikin et al., Nature 384, 621 (1996).
We will assume that the gyromagnetic ratio equals to two, ignoring any spin-orbit effects (see F. Braun et al., Phys. Rev. Lett. 78, 4542 (1997).
B. Janko, A. Smith, and V. Ambegaokar, Phys. Rev. B 50, 1152 (1994).
D.S. Golubev and A.D. Zaikin, Phys. Lett. A 195, 380 (1994); D.V. Averin and Yu.V. Nazarov, Physica B 203, 310 (1994).
The spin susceptibility for even and odd grains shown in the, figures has been obtained by evaluating the partition function in the static, path approximation (see Ref.[4]).
A.A. Abrikosov, L.P. Gorkov and I.E. Dzyaloshinskii, Methods, of Quantum Field Theory in Statistical Physics (Dover, New York, 1963).
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1999 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
About this paper
Cite this paper
Hekking, F.W.J., Di Lorenzo, A., Fazio, R. (1999). Re-entrant spin susceptibility of ultrasmall superconducting grains. In: Kramer, B. (eds) Advances in Solid State Physics 39. Advances in Solid State Physics, vol 39. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0107490
Download citation
DOI: https://doi.org/10.1007/BFb0107490
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-41573-2
Online ISBN: 978-3-540-44553-1
eBook Packages: Springer Book Archive