Overview of recent magnetic studies of high Tc cuprate parent compounds and related materials

Recent studies of the magnetic properties of several high superconducting transition temperature (Tc) cuprate parent compounds and related materials will be reviewed. The observations of a Heisenberg to XY-like crossover upon cooling below ∼ 300 K towards the Néel temperature TN=257 K and a subseque...

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Hauptverfasser:	Johnston, D. C., Ami, T., Borsa, F., Canfield, P. C., Carretta, P., Cho, B. K., Cho, J. H., Chou, F. C., Corti, M., Crawford, M. K., Dervenagas, P., Erwin, R. W., Fernandez-Baca, J. A., Goldman, A. I., Gooding, R. J., Huang, Q., Hundley, M. F., Harlow, R. L., Harmon, B. N., Lascialfari, A., Miller, L. L., Ostenson, J. E., Salem, N. M., Stassis, C., Sternlieb, B., Suh, B. J., Torgeson, D. R., Vaknin, D., Vos, K. J. E., Wang, X.-L., Wang, Z. R., Xu, M., Zarestky, J.
Format:	Buchkapitel
Sprache:	eng
Schlagworte:	Critical Magnetic Field CuO2 Layer CuO2 Plane Dope Hole Nuclear Quadrupole Resonance
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Zusammenfassung:	Recent studies of the magnetic properties of several high superconducting transition temperature (Tc) cuprate parent compounds and related materials will be reviewed. The observations of a Heisenberg to XY-like crossover upon cooling below ∼ 300 K towards the Néel temperature TN=257 K and a subsequent magnetic field-induced XY-like to Ising-like crossover near TN in single crystals of the K2NiF4-type spin 1/2 model compound Sr2CuO2Cl2 will be described. The spin 1/2 linear chain compound Sr2CuO3, the parent of the Sr2CuO3+δ oxygen-doped superconductors, is found to exhibit classic Bonner-Fisher magnetic behavior, with a large antiferromagnetic Cu−Cu superexchange coupling constant. Studies of the evolution of La2−xSrxCuO4 with Sr doping in the insulating regime (x
ISSN:	0075-8450 1616-6361
DOI:	10.1007/BFb0102018