Measurement of the supercooling curve of a paramagnetically limited superconductor

The supercooling curve of a paramagnetically limited superconductor was determined by measuring the magnetic field dependence of the fluctuations and was compared to theory.     

Zeeman splitting of the density of states of superconducting Ga thin films

The tunneling conductance $\text{d}\text{I}\text{d}\text{V}$ of Al-Al₂O₃-Ga junctions in a parallel magnetic field reveals Zeeman splitting of the superconducting quasiparticle density of states of the Ga. The magnitude of the splitting implies an unexpectedly small spin-orbit parameter b=0.6.     

Proximity effect in ferromagnetic metals

Spin polarized tunneling measurements show that ferromagnetism is suppressed in films of Ni thinner than three atomic layers when in contact with Al. In contrast, ferromagnetism was found in Fe, Co, Gd, and Tm films only one atomic layer thick. Present results on Ni agree with anomalous Hall effect measurements, but do not agree with photoemission results.     

Resolution of the spin states of a superconductor by tunneling from a ferromagnet

Conductance measurements of tunnel junctions formed between a superconductor (thin A1) and a ferromagnetic metal (Ni) in a magnetic field are used to resolve the tunneling conductance into conductances for each of the electron spin directions. This resolution can be used to obtain the spin densities of states of high field superconductors for which spin scattering processes are important.     

Electron spin effects in type II superconducting films

Tunneling, critical field, and fluctuation measurements on superconducting thin films of V-Ti alloy in parallel and perpendicular magnetic fields show many of the predicted effects of the electron spin magnetic moment in a high κ, type II superconductor.     

Effects of spin paramagnetism on the magnetic field behavior of thin superconducting beryllium films

Tunneling measurements on thin superconducting Be in a parallel magnetic field show splitting of the quasiparticle states and other effects of Pauli paramagnetism with small spin-orbit scattering.