Magnetic domain structure and spin-dependent reflectivity measurements on cobalt thin films intercalated at the graphene/Ir(111) interface are investigated using spin-polarised low-energy electron microscopy. We find that graphene-covered cobalt films have surprising magnetic properties. Vectorial imaging of magnetic domains reveals an unusually gradual thickness-dependent spin reorientation tr...

Photoproduction spin sum-rules offer a new window on the spin structure of the nucleon that complements the information we can learn from polarised deep inelastic scattering experiments. We review the theory and present status of the Drell-Hearn-Gerasimov sum-rule in QCD, emphasising the possible relation between the present " discrepancy " in this sum-rule and the nucleon's strangeness magneti...

The neutron spin structure function, g1n, has been of considerable interest recently in connection with the Bjorken sum rule and the proton spin crisis. Work on this problem has concentrated on measurements at low-x. We recall the important, non-perturbative physics to be learnt by going instead to larger values of x and especially from a determination of the place where the expected sign chang...

A new derivation of the quantum Boltzmann transport equation for the Fermion system from the quantum time evolution equation for the wigner distribution function is presented. The method exhibits the origin of the time - irreversibility of the Boltzmann equation. In the present work, the spin dependent and indistinguishibility of particles are also considered.

In a double polarised electron scattering experiment data have been taken from which G n E can be extracted for Q 2 = 0.2 GeV 2 /c 2. We have measured asymmetries corresponding to the spin-spin correlation functions A ′ x and A ′ z and to the target analyzing power A 0 y. In order to investigate the influence of the reaction mechanisms and the different components of the 3 He wave function, als...

Our present information on the gluon polarisation ∆g/g is reviewed. The data from fixedtarget lepton–nucleon experiments are in context with the recent data from the RHIC polarised pp collider. The main tools to study ∆g/g in lepton–nucleon scattering are scaling violations of the g1 structure functions and longitudinal spin asymmetries in hadron production. Results from high-pT hadron pairs, i...