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

Here 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 Sr2+ substitution enhances conductivity, but does not change the quasiparticle mass of bands induced by heavy fermion hybridization.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4]
  1. 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)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  3. Univ. of Tokyo (Japan). Inst. for Solid State Physics
  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; Univ. of Tokyo (Japan). Inst. for Solid State Physics
Publication Date:
OSTI Identifier:
1336215
Report Number(s):
BNL--113235-2016-JA
Journal ID: ISSN 0953-8984; R&D Project: PM016; KC0201050
Grant/Contract Number:
SC00112704; 25707030
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 28; Journal Issue: 42; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); JSPS, Japan; Univ. of Tokyo
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY