Abstract
Peculiar property of electronic order is clarified for the two-channel Kondo lattice. With two conduction electrons per site, the order parameter is a composite quantity involving both local and itinerant degrees of freedom. In contrast to the ordinary Kondo lattice, a heavy electron band is absent above the transition temperature, but is rapidly formed below it. The change of entropy associated with the ordering is found to be close to ln ∞2 per site. This entropy corresponds to the residual entropy in a two-channel Kondo impurity, which has been regarded as due to localized free Majorana particles. The present composite order is interpreted as instability of Majorana particles toward non-Kramers conduction electrons plus heavy fermions that involve localized electrons.
Original language | English |
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Article number | 044707 |
Journal | journal of the physical society of japan |
Volume | 82 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2013 |
Externally published | Yes |
Keywords
- Composite order
- Continuoustime quantum Monte Carlo
- Dynamical mean-field theory
- Majorana fermion
- Two-channel Kondo lattice
ASJC Scopus subject areas
- Physics and Astronomy(all)