Role of f electrons in the Fermi surface of the heavy fermion superconductor beta-YbAlB4.
We present a detailed quantum oscillation study of the Fermi surface of the recently discovered Yb-based heavy fermion superconductor beta-YbAlB4. We compare the data, obtained at fields from 10 to 45 T, to band structure calculations performed using the local density approximation. Analysis of the data suggests that f holes participate in the Fermi surface up to the highest magnetic fields studied. We comment on the significance of these findings for the unconventional superconducting properties of this material.
O'Farrell
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EC
Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
Tompsett
D A
DA
Sebastian
S E
SE
Harrison
N
N
Capan
C
C
Balicas
L
L
Kuga
K
K
Matsuo
A
A
Kindo
K
K
Tokunaga
M
M
Nakatsuji
S
S
Csányi
G
G
Fisk
Z
Z
Sutherland
M L
ML