Abstract
Results of recent research on electron-doped infinite-layer compounds (e.g., Sr1−xLaxCuO2), T′-phase compounds (e.g., Nd2−xCexCuO4), and spin-1/2 quasi-1-D ladder compounds (e.g., Sr14Cu24O41) are presented, including structural and magnetic measurements. Studies of steric effects indicate that superconductivity disappears in both electron-doped systems for values of the in-plane lattice constant below a critical value, acr ≈ 3.92 Å. Attempts to hole dope both the infinite-layer and T′ phases are described. For the quasi-1-D ladder compound Sr14Cu24O41, the anisotropic susceptibility of this system and its “small gap” are discussed. Collaborative studies of these systems using μSR, NMR, and other spectroscopies are reviewed.
Similar content being viewed by others
References
Y. Tokura, H. Tagaki, and S. Uchida, Nature337, 345 (1989); J. T. Markertet al., Physica C158, 178 (1989).
M. G. Smithet al., Nature351, 549 (1991).
P. G. Radaelliet al, Phys. Rev. B49, 15,322 (1994).
J. D. Jorgensenet al, Phys. Rev. B47, 14,654 (1993).
Z. Hiroiet al, Physica C208, 286 (1993); S. Tao and H.-U. Nissen, Phys. Rev. B51, 8638 (1995).
J. T. Markertet al., inProceedings of the First Polish-US Conference on High Temperature Superconductivity, Springer Lecture Notes on Physics, to appear.
D. B. Tanneret al, to appear inSpectroscopic Studies of High T c Cuprates, I. Bosovic and D. van der Marel, eds. (SPIE, Bellingham, 1996).
E. Dagotto and T. M. Rice, Science271, 618 (1996).
B.-H. O, R. Tian, and J. T. Markert, Physica C235–240, 551 (1994).
Y. J. Uemuraet al, Nature364, 605 (1993); Y. J. Uemura, private commun.
T. Imaiet al, J. Phys. Chem. Solids56, 1921 (1995).
J. Zasadzinskiet al, inSpectroscopic Studies of High T c Cuprates, ibid..
B. Stadloberet al, Phys. Rev. Lett.74, 4911 (1995).
A. V. Elliott, K. Mochizuki, and J. T. Markert, to be published.
X. Li, T. Kawai, and S. Kawai, Jpn. J. Appl. Phys.31, L934 (1992).
M. Azumaet al, Phys. Rev. Lett.73, 3463 (1994).
M. Kato, K. Shiota, and Y. Koike, Physica C258, 284 (1996).
E. M. McCarronet al, Mat. Res. Bull.23, 1355 (1988).
Author information
Authors and Affiliations
Additional information
This research was supported by NSF Grant DMR-9158089 and Welch Foundation Grant F-1191.