0000000000231052
AUTHOR
Matthias Beck
Energy dependence of the electron-boson coupling strength in the electron-doped cuprate superconductor Pr1.85Ce0.15CuO4−δ
In the conventional theory of superconductivity the critical temperature Tc is determined by the electron-phonon coupling constant and the phonon cut-off frequency. The hallmark experiments of McMillan and Rowell demonstrated that bosons (phonons) responsible for pairing can be observed through the frequency dependence of the gap parameter. Determination of the electron-boson coupling strength in high-${T}_{c}$ cuprates is, however, not an easy task. One of the promising ways is to measure the energy relaxation rate of photoexcited carriers by using femtosecond real-time techniques. Here, considering the electron relaxation process within the conduction band, it is commonly assumed that the…
Union recognition in Britain's offshore oil and gas industry: implications of the Employment Relations Act 1999
The Employment Relations Act 1999 (ERA) has provided trade unions in the UK with new opportunities for achieving recognition. After a long history of anti-unionism in the offshore oil and gas industry, employers have voluntarily ceded recognition to Trades Union Congress (TUC)-affiliated trade unions. The legitimacy of this recognition process has been contested by the non-TUC Offshore Industry Liaison Committee (OILC), an offshore workers’ union, seeking to act as a recognised bargaining agent. The ERA may be promoting ‘business friendly’ agreements at the expense of claims to recognition of other bargaining agents and of democratic employee choice.