307 citations · 1.1k across the 30 of their papers we have counts for
13 papers · 1 filter
Vison crystals, chiral and crystalline phases in the Yao-Lee model
Muhammad Akram, Emilian Marius Nica, Yuan-Ming Lu +1
We study the phase diagram of the Yao-Lee model with Kitaev-type spin-orbital interactions in the presence of Dzyaloshinskii-Moriya interactions and external magnetic fields. Unlik…
Magnetic fragmentation and fractionalized Goldstone modes in a bilayer quantum spin liquid
Aayush Vijayvargia, Emilian Marius Nica, Roderich Moessner +2
We study the phase diagram of a bilayer quantum spin liquid model with Kitaev-type interactions on a square lattice. We show that the low energy limit is described by a -flux Hu…
Kitaev spin-orbital bilayers and their moiré superlattices
Emilian Nica, Muhammad Akram, Aayush Vijayvargia +2
We determine the phase diagram of a bilayer, Yao-Lee spin-orbital model with inter-layer interactions (J), for several stackings and moiré superlattices. For AA stacking, a gapped…
Shadow surface states in topological Kondo insulators
Areg Ghazaryan, Emilian M. Nica, Onur Erten +1
The surface states of 3D topological insulators in general have negligible quantum oscillations when the chemical potential is tuned to the Dirac points. In contrast, we find that…
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…
Sequential localization of a complex electron fluid
V. Martelli, A. Cai, E. M. Nica +13
Complex and correlated quantum systems with promise for new functionality often involve entwined electronic degrees of freedom. In such materials, highly unusual properties emerge…
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…
Antiferroquadrupolar order and rotational symmetry breaking in a generalized bilinear-biquadratic model on a square lattice
Hsin-Hua Lai, Wen-Jun Hu, Emilian M. Nica +2
The magnetic and nematic properties of the iron chalcogenides have recently been the subject of intense interest. Motivated by the proposed antiferroquadrupolar and Ising-nematic o…
Kondo Destruction and Quantum Criticality in Kondo Lattice Systems
Qimiao Si, J. H. Pixley, Emilian Nica +4
Considerable efforts have been made in recent years to theoretically understand quantum phase transitions in Kondo lattice systems. A particular focus is on Kondo destruction, whic…
Quantum critical Kondo destruction in the Bose-Fermi Kondo model with a local transverse field
Emilian Marius Nica, Kevin Ingersent, Jian-Xin Zhu +1
Recent studies of the global phase diagram of quantum-critical heavy-fermion metals prompt consideration of the interplay between the Kondo interactions and quantum fluctuations of…