Quantum size effects on the perpendicular upper critical field in ultra-thin lead films

Abstract

We report the thickness-dependent (in terms of atomic layers) oscillation behavior of the perpendicular upper critical field $H_{c2\perp }$ in the ultra-thin lead films at the reduced temperature ($t=T/T_c$). Distinct oscillations of the normal-state resistivity as a function of film thickness have also been observed. Compared with the $T_c$ oscillation, the $H_{c2\perp }$ shows a considerable large oscillation amplitude and a $\pi$ phase shift. The oscillatory mean free path caused by quantum size effect plays a role in $H_{c2\perp }$ oscillation.

4 pages, 4 figures

References in corpus (5)

• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• Mixed state of a dirty two-band superconductor: application to MgB_2
• Anomalous thickness dependence of the Hall effect in ultrathin Pb layers on Si(111)
• Role of confined phonons in thin film superconductivity
• Quantum Size Effect in Conductivity of Multilayer Metal Films

Cited by in corpus (18)

• Dimensional crossover and incipient quantum size effects in superconducting niobium nanofilms
• Shape Resonances in superconducting gaps in a 2DEG at oxide-oxide interface
• Rise and fall of shape resonances in thin films of BCS superconductors
• Superconducting size effect in thin films under electric field: mean-field self-consistent model
• Critical temperature of MgB${}_2$ ultrathin superconducting films: BCS model calculations in tight-binding approximation
• Unusual giant magnetoresistance effect in heterojunction structure of ultra-thin single-crystal Pb film on silicon substrate
• Multigap superconductivity and interaction driven resonances in superconducting nanofilms with an inner potential barrier
• Quantum size effects in thermodynamic superconducting properties of ultra thin films
• Quantum size effect on the paramagnetic critical field in Pb nanofilms
• Multifaceted impact of a surface step on superconductivity in atomically thin films
• Influence of the electron density on the thickness-dependent energy gap oscillations in superconducting metallic nanofilms
• Superconducting nanoribbon with a constriction: A quantum-confined Josephson junction
• Function follows form: From semiconducting to metallic towards superconducting PbS nanowires by faceting the crystal
• Periodicity of superconducting shape resonances in thin films
• Quantum size effects on Andreev transport in Nb/Au/Nb Josephson junctions: A combined ab-initio and experimental study
• Intersubband pairing induced Fulde-Ferrell phase in metallic nanofilms
• Scanning tunneling microscopic evidence of interface enhanced high-Tc superconductivity in Pb islands grown on SrTiO3
• Orbital effect on the in-plane critical field in free-standing superconducting nanofilms