Planes hole-doping

Angular variations of the dHvA frequencies of a hole-doped WC crystal (a floating zone-grown crystal) in the (0001), (1120) and (1010) planes are shown in Figure 6.6. The observed frequencies correspond to the a, fi, y, 6 and [x branches in Figure 6.5, but the signals corresponding to e, X and v branches can not be detected. 

Cross sections of the a and fi Fermi surfaces and the y and 6 Fermi surfaces in the plane which includes the axis of rotation are shown in Figure 6.8. Each of the experimental Fermi surfaces has the axis of rotation about the [0001] axis. The dFIvA frequency values used to construct the Fermi surfaces are shown in Table 6.2. The values in parentheses in Table 6.2 are estimated frequencies that take into account the angular dependencies and the frequency ratios between the flux-grown crystal and the hole-doped crystal. The obtained Fermi surface dimensions are summarized in Table 6.3. 

Figure 2 depicts schematically the geometry and the spin-charge order for an in-plane stripe as derived from low-energy neutron dlffraction/scattering in a typical hole-doped cuprate... 

Taskin, A.A., Lavrov, A.N., and Ando, Y. (2005) Transport and magnetic properties of GdBaCo20s4. single crystals a cobalt oxide with square-lattice C0O2 planes over a wide range of electron and hole doping, Phys. Rev. B Condens. Matter Mater. Phys., 71 (13), 134414. 

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