Quantum Criticality without Tuning in the Mixed Valence Compound beta-YbAlB4

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

26 pages, 7 figures including supporting online matelials

Scientific paper

10.1126/science.1197531

Fermi liquid theory, the standard theory of metals, has been challenged by a number of observations of anomalous metallic behavior found in the vicinity of a quantum phase transition. The breakdown of the Fermi liquid is accomplished by fine-tuning the material to a quantum critical point using a control parameter such as the magnetic field, pressure, or chemical composition. Our high precision magnetization measurements of the ultrapure f-electron based superconductor {\beta}-YbAlB4 demonstrate a scaling of its free energy indicative of zero-field quantum criticality without tuning in a metal. The breakdown of Fermi-liquid behavior takes place in a mixed-valence state, in sharp contrast with other known examples of quantum critical f-electron systems that are magnetic Kondo lattice systems with integral valence.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Quantum Criticality without Tuning in the Mixed Valence Compound beta-YbAlB4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum Criticality without Tuning in the Mixed Valence Compound beta-YbAlB4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Criticality without Tuning in the Mixed Valence Compound beta-YbAlB4 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-643886

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.