Abstract
The authors study non-Fermi liquid states due to the multipolar Kondo effect by using perturbative renormalization group analysis, and differences in the type of ground state depending on whether they are considered separately or together.
Highlights
Classification of non-Fermi liquid states may hold a key for understanding unconventional metallic and superconducting phases in strongly interacting fermion systems [1,2,3,4]
Some of us have shown that a non-Fermi liquid state arises in the multipolar Kondo problem in cubic systems, where the local moment carries quadrupolar and octupolar moments, which interact with conduction electrons with p-wave orbital symmetry (T2 representation of the local Td symmetry) [28,29]
III, we present the symmetry-permitted multipolar Kondo models with conduction electrons belonging to T1, T2, and T1 ⊗ T2
Summary
Classification of non-Fermi liquid states may hold a key for understanding unconventional metallic and superconducting phases in strongly interacting fermion systems [1,2,3,4]. Some of us have shown that a non-Fermi liquid state arises in the multipolar Kondo problem in cubic systems, where the local moment carries quadrupolar and octupolar moments, which interact with conduction electrons with p-wave orbital symmetry (T2 representation of the local Td symmetry) [28,29]. This non-Fermi liquid state is distinct from the wellknown multichannel Kondo non-Fermi liquid states. VI, we discuss the broader implications of our findings and propose future directions of research
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