Publications (12)
Field evolution of quantum critical and heavy Fermi-liquid components in the magnetization of the mixed valence compound beta-YbAlB4
Yosuke Matsumoto, K. Kuga, Y. Karaki +5
We present the high-precision magnetization data of the valence fluctuating heavy fermion superconductor -YbAlB in a wide temperature range from 0.02 K to 320 K spanning fo…
Intact Quasiparticles at an Unconventional Quantum Critical Point
M. L. Sutherland, E. C. T. O'Farrell, W. H. Toews +6
We report measurements of in-plane electrical and thermal transport properties in the limit near the unconventional quantum critical point in the heavy-fermion me…
Strong valence fluctuation in the quantum critical heavy fermion superconductor beta-YbAlB4: A hard x-ray photoemission study
M. Okawa, M. Matsunami, K. Ishizaka +12
Electronic structures of the quantum critical superconductor beta-YbAlB4 and its polymorph alpha-YbAlB4 are investigated by using bulk-sensitive hard x-ray photoemission spectrosco…
The role of f -electrons in the Fermi surface of the heavy fermion superconductor beta-YbAlB4
E. C. T. O'Farrell, D. A. Tompsett, S. E. Sebastian +10
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…
Evidence for the existence of Kondo coupled resonant modes in heavy fermions
L. M. Holanda, J. M. Vargas, C. Rettori +5
Electron Spin Resonance (ESR) can microscopically probe both conduction electrons (ce) and local moment (LM) spin systems in different materials. A ce spin resonance (CESR) is obse…
Low temperature magnetization of the quantum critical heavy fermion superconductor -YbAlB
Y. Matsumoto, K. Kuga, Y. Karaki +2
-YbAlB is the first Yb-based heavy fermion superconductor with mK. We measured low temperature magnetization of high-purity single crystals down to 25…