APCTP SEMIANR : Non-Fermi Liquids in Multipolar Materials
VENUE #512, APCTP HQ & ZOOM
DATE & TIME 8.4 (Tue.), 2020 / 10:00 AM (KST)
ZOOM LINK https://zoom.us/j/92089229479
ABSTRACT
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The hallmarks of non-Fermi liquids are singular thermodynamic and transport properties that are distinct from those associated with a Fermi liquid. Non-Fermi liquid behaviors are famously seen in cuprates, heavy fermion materials, and metallic quantum critical systems. In this talk, I discuss possible non-Fermi liquids in multipolar materials, where conduction electrons interact with the local moments that do not carry any dipole moment, but possess higher-rank multipolar moments. This theoretical work is partly motivated by recent experiments on cubic f-electron systems, where the local moments arise from non-Kramers ground states. I present the renormalization-group and conformal-field-theory solution of a multipolar Kondo problem, where a single multipolar moment is interacting with the orbital and spin degrees of freedom of conduction electrons. I show that an unexpected non-Fermi liquid state emerges and discuss its broader implications to existing and future experiments.
Work done in collaboration with Adarsh Patri, arXiv:2005.08973 and an earlier work with Adarsh Patri and Ilia Khait, arXiv:1904.02717. |
SPEAKER
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Name |
Affiliation |
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Yong-Baek Kim |
University of Toronto |
HOST
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Name |
Affiliation |
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Yunkyu Bang |
APCTP |
CONTACT INFORMATION
1) Host: Prof. Yunkyu Bang (ykbang@apctp.org)
2) Office: Research Support Team (ra@apctp.org)
SPONSOR
APCTP
