Possible triplet superconductivity in thin films and layered compounds in a strong, parallel magnetic field

Journal Article · Tue Dec 01 04:00:00 EST 1981 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.24.6361· OSTI ID:5698940

Klemm, R A; Scharnberg, K

We consider a model of both singlet and triplet superconductivity in thin films and intercalated layered compounds in which the attractive electron-electron interaction has both s- and p-wave form in the layers and interlayer pairing is also possible for the layered materials. We include the effects of intralayer s- and p-wave impurity scattering. As expected, we find that the intralayer singlet state is not suppressed by scattering, but the interlayer state is suppressed by s-wave scattering and the intralayer p-wave state is suppressed by transport scattering. For thin films in a parallel magnetic field the p-wave state is dominant below the transition temperature T/sub i/ at fields exceeding the s-wave Pauli limit H/sub p/. For the layered compounds with interlayer tunneling matrix element J, there is temperature T*>0 below which H/sub c/2,parallel for one of the triplet states is divergent, provided that J<2..pi..T/sub 10//..gamma sqrt..e or J<2..pi..T/sub i/0f(tau/sub s//tau/sub tr/)/..gamma.., where f(z)> or =1 and T/sub i/0 and T/sub I/0 are the intra- and interlayer triplet transition temperatures in the absence of impurities, respectively. We also examine the behavior of the triplet states in small magnetic fields, and discuss the possibilities of observing the phenomenon in real materials.

• Research Organization: Abteilung fuer Theoretische Festkoerperphysik, Universitaet Hamburg, Hamburg, West Germany
• OSTI ID: 5698940
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 24:11; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRON-ELECTRON INTERACTIONS
FILMS
IMPURITIES
INTERACTIONS
LAYERS
LEPTON-LEPTON INTERACTIONS
MAGNETIC FIELDS
MATRIX ELEMENTS
MIXED STATE
PARTICLE INTERACTIONS
SCATTERING
SUPERCONDUCTORS
TUNNEL EFFECT
TYPE-II SUPERCONDUCTORS