title: Multiband electronic transport in α-Yb1-x Sr x AlB4 [x  =  0, 0.19(3)] single crystals.
abstract: We report on the evidence for the multiband electronic transport in α-YbAlB4 and α-Yb0.81(2)Sr0.19(3)AlB4. Multiband transport reveals itself below 10 K in both compounds via Hall effect measurements, whereas anisotropic magnetic ground state sets in below 3 K in α-Yb0.81(2)Sr0.19(3)AlB4. Our results show that Sr(2+) substitution enhances conductivity, but does not change the quasiparticle mass of bands induced by heavy fermion hybridization.
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA. Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800, USA.
authors.forename: Hyejin
authors.initials: H
authors.lastname: Ryu
authors.forename: Milinda
authors.initials: M
authors.lastname: Abeykoon
authors.forename: Emil
authors.initials: E
authors.lastname: Bozin
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: S
authors.initials: S
authors.lastname: Nakatsuji
authors.forename: C
authors.initials: C
authors.lastname: Petrovic