Anomalous band-crossings in the N=57 isotones ¹⁰³Pd and ¹⁰⁵Cd

High-spin states of the N=57 isotones, ¹⁰³Pd and ¹⁰⁵Cd, have been studied using the reactions ⁹⁴Zr( ¹⁶O, alpha 3n)¹⁰³Pd and ⁹⁴Zr( ¹⁶O,5n)¹⁰⁵Cd. The nu h_11/2 yrast bands in both nuclei are extended up to spin 47/2h(cross), past the first band-crossing. The observed increase in alignment in both bands is significantly lower than in analogous bands in the heavier odd-N isotopes, where the alignment is thought to be due to a pair of low- Omega h_11/2 neutrons. The relatively low increase in alignment in ¹⁰³Pd and ¹⁰⁵Cd is consistent with cranked shell model calculations which predict that at low deformation both the (g_9/2)² proton and the (g_7/2)² neutron alignments are favoured in these N=57 isotones, over the (h _11/2)² neutron alignment.