Multiband electronic transport in α-Yb1₋xSrx AlB4 [ x = 0, 0.19(3)] single crystals

Ryu, Hyejin; Abeykoon, Milinda; Bozin, Emil; Matsumoto, Yosuke; Nakatsuji, S.; Petrovic, C.

doi:10.1088/0953-8984/28/42/425602

Title: Multiband electronic transport in α-Yb_1₋xSr_x AlB₄ [ x = 0, 0.19(3)] single crystals

Journal Article · Fri Aug 19 00:00:00 EDT 2016 · Journal of Physics. Condensed Matter

DOI:https://doi.org/10.1088/0953-8984/28/42/425602· OSTI ID:1336215

Ryu, Hyejin ^[1]; Abeykoon, Milinda ^[2]; Bozin, Emil ^[2]; Matsumoto, Yosuke ^[3]; Nakatsuji, S. ^[3]; Petrovic, C. ^[4]

Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Stony Brook Univ., Stony Brook, NY (United States). Dept. of Physics and Astronomy; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
Univ. of Tokyo (Japan). Inst. for Solid State Physics
Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Stony Brook Univ., Stony Brook, NY (United States). Dept. of Physics and Astronomy; Univ. of Tokyo (Japan). Inst. for Solid State Physics

Here we report on the evidence for the multiband electronic transport in α- YbAlB₄ and α-Yb_0.81(2)Sr_0.19(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-Yb_0.81(2)Sr_0.19(3)AlB₄. Our results show that Sr²⁺ substitution enhances conductivity, but does not change the quasiparticle mass of bands induced by heavy fermion hybridization.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); JSPS, Japan; Univ. of Tokyo

Grant/Contract Number:: SC00112704; 25707030; AC02-98CH10886

OSTI ID:: 1336215

Alternate ID(s):: OSTI ID: 1299434

Report Number(s):: BNL-113235-2016-JA; R&D Project: PM016; KC0201050

Journal Information:: Journal of Physics. Condensed Matter, Vol. 28, Issue 42; ISSN 0953-8984

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Multiband electronic transport in α-Yb_1₋xSr_x AlB₄ [ x = 0, 0.19(3)] single crystals