Interface Spin-Orbit Coupling in a Non-centrosymmetric Thin-(9)

We present a detailed study of the effects of interface spin-orbit coupling (ISOC) on the critical field behavior of non-centrosymmetric (NCS), ultra-thin superconducting Be/Au bilayers. Parallel field measurements were made in bilayers with Be thicknesses

FIG.5:Ratioofthecritical eldofa5.4nmBe/Aubilayer(Tc=0.68K,Hc2=0.137T,R=240 )and5.4nmBe lm(Tc=0.505K,Hc2=0.048T,R=162 )asafunctionoftiltangle.SolidlineisthesolutionofEq.(1)assuminganisotropicSOcouplingparameterofb=1.85mVfortheBe/Aubilayerandb=0.0132mVfortheBe lm.ThedashedlineisthesolutionofEq.(1)assumingthattheBe/AuSOparameterisexponentiallyattenuatedwithincreasingtiltangle.Leftinset:FitofEq.(1)totheBe lmdata.Rightinset:Solidlineisa tofEq.(1)totheBe/Audatawithaconstantb.Thedashedlineisasomewhatbetter tusinganexponentiallyformb=boexp( θ/θo).