Pc. Hammel et Dj. Scalapino, LOCAL MICROSTRUCTURE AND THE CUPRATE SPIN GAP PUZZLE, Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic, 74(5), 1996, pp. 523-528
Here we propose that the spin gap properties of the underdoped cuprate
s may be associated with a local inhomogeneous structure in the CuO2 p
lanes. Experimental evidence for such structure is discussed along wit
h suggestions regarding how such local structure might give rise to a
spin gap.