5 papers · 1 filter
Kondo effect due to a hydrogen impurity in graphene: a multichannel Kondo problem with diverging hybridization
Zheng Shi, Emilian M. Nica, Ian Affleck
We consider the Kondo effect arising from a hydrogen impurity in graphene. As a first approximation, the strong covalent bond to a carbon atom removes that carbon atom without brea…
Charge transport in graphene-based mesoscopic realizations of Sachdev-Ye-Kitaev models
Oguzhan Can, Emilian M. Nica, Marcel Franz
We consider a recent proposal for a physical realization of the Sachdev-Ye-Kitaev (SYK) model in the zeroth-Landau-level sector of an irregularly-shaped graphene flake. We study in…
Kondo Destruction and Multipolar Order-- Implications for Heavy Fermion Quantum Criticality
Hsin-Hua Lai, Emilian M. Nica, Wen-Jun Hu +3
Quantum criticality beyond the Landau paradigm represents a fundamental problem in condensed matter and statistical physics. Heavy fermion systems with multipolar degrees of freedo…
Orbital-selective superconductivity in the nematic phase of FeSe
Haoyu Hu, Rong Yu, Emilian M. Nica +2
The interplay between electronic orders and superconductivity is central to the physics of unconventional superconductors, and is particularly pronounced in the iron-based supercon…
Quantum criticality and global phase diagram of an Ising-anisotropic Kondo lattice
Emilian M. Nica, Kevin Ingersent, Qimiao Si
Recent studies of heavy-fermion systems with tunable quantum fluctuations have focused on a variety of zero-temperature phase transitions that involve not only the onset of magneti…