2k citations · 3.5k across the 37 of their papers we have counts for
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Phase transition and fractionalization in superconducting Kondo lattice model
Fatemeh Mohammadi, Amirhossein Saedpanah, Abolhassan Vaezi +1
Topology, symmetry, electron correlations, and the interplay between them have formed the cornerstone of our understanding of quantum materials in recent years and are used to iden…
Hybrid topological magnon-phonon modes in honeycomb and kagome lattices
Bahman Sheikhi, Mehdi Kargarian, Abdollah Langari
Magnons and phonons are two fundamental neutral excitations of magnetically ordered materials which can significantly dominate the low-energy thermal properties. In this work we st…
Excitonic insulator phase and dynamics of condensate in a topological one-dimensional model
Zahra Khatibi, Roya Ahemeh, Mehdi Kargarian
We employ mean-field approximation to investigate the interplay between the nontrivial band topology and the formation of excitonic insulator (EI) in a one-dimensional chain of ato…
Phase diagram and thermal Hall conductivity of spin-liquid Kekulé-Kitaev model
Fatemeh Mirmojarabian, Mehdi Kargarian, Abdollah Langari
In this work we study the phase diagram of Kekulé-Kitaev model. The model is defined on a honeycomb lattice with bond dependent anisotropic exchange interactions making it exactly…
Disorder and Zeeman coupling induced gap-filling states in the nodeless chiral superconducting Bi/Ni bilayer system
Rasoul Ghadimi, Mehdi Kargarian, S. Akbar Jafari
Motivated by the recently discovered time-reversal symmetry-breaking superconductivity in epitaxial Bi/Ni bilayer system with transition temperature K and the obser…
Competing superconducting phases in interacting two-dimensional electron gas with strong Rashba spin-orbit coupling
Rasoul Ghadimi, Mehdi Kargarian, S. Akbar Jafari
In this work we study interacting electrons on square lattice in the presence of strong Rashba spin-orbit interaction. The spin-orbit term forces the time-reversal electron states…
Dynamo Effect and Turbulence in Hydrodynamic Weyl Metals
Victor Galitski, Mehdi Kargarian, Sergey Syzranov
The dynamo effect is a class of macroscopic phenomena responsible for generation and maintaining magnetic fields in astrophysical bodies. It hinges on hydrodynamic three-dimensiona…
Deformation and Stability of Surface States in Dirac semimetals
Mehdi Kargarian, Yuan-Ming Lu, Mohit Randeria
The unusual surface states of topological semimetals have attracted a lot of attention. Recently, we showed [PNAS 113, 8648 (2016)] that for a Dirac semimetal (DSM) arising from ba…
Infinite Projected Entangled-Pair State algorithm for ruby and triangle-honeycomb lattices
Saeed S. Jahromi, Roman Orus, Mehdi Kargarian +1
The infinite Projected Entangled-Pair State (iPEPS) algorithm is one of the most efficient techniques for studying the ground-state properties of two-dimensional quantum lattice Ha…
Topological spin liquids in the ruby lattice with anisotropic Kitaev interactions
Saeed S. Jahromi, Mehdi Kargarian, S. Farhad Masoudi +1
The ruby lattice is a four-valent lattice interpolating between honeycomb and triangular lattices. In this work we investigate the topological spin-liquid phases of a spin Hamilton…
Amperean Pairing at the Surface of Topological Insulators
Mehdi Kargarian, Dmitry K. Efimkin, Victor Galitski
The surface of a 3D topological insulator is described by a helical electron state with the electron's spin and momentum locked together. We show that in the presence of ferromagne…
Are the double Fermi arcs of Dirac semimetals topologically protected?
Mehdi Kargarian, Mohit Randeria, Yuan-Ming Lu
Motivated by recent experiments probing anomalous surface states of Dirac semimetals (DSMs) NaBi and CdAs, we raise the question posed in the title. We find that, in ma…
Theory of Kerr and Faraday rotations and linear dichroism in Topological Weyl Semimetals
Mehdi Kargarian, Mohit Randeria, Nandini Trivedi
We consider the electromagnetic response of a topological Weyl semimetal (TWS) with a pair of Weyl nodes in the bulk and corresponding Fermi arcs in the surface Brillouin zone. We…
Heterointerface engineered electronic and magnetic phases of NdNiO3 thin films
Jian Liu, Mehdi Kargarian, Mikhail Kareev +10
Mott physics is characterized by an interaction-driven metal-to-insulator transition in a partially filled band. In the resulting insulating state, antiferromagnetic orders of the…
Multi-orbital Effects on Thermoelectric Properties of Strongly Correlated Materials
Mehdi Kargarian, Gregory A. Fiete
The effects of electronic correlations and orbital degeneracy on thermoelectric properties are studied within the context of multi-orbital Hubbard models on different lattices. We…
Quantum phase transitions out of a Z2 x Z2 topological phase
Saeed S. Jahromi, S Farhad Masoudi, Mehdi Kargarian +1
We investigate the low-energy spectral properties and robustness of the topological phase of color code, which is a quantum spin model for the aim of fault-tolerant quantum computa…
Topological Crystalline Insulators in Transition Metal Oxides
Mehdi Kargarian, Gregory A. Fiete
Topological crystalline insulators (TCI) possess electronic states protected by crystal symmetries, rather than time-reversal symmetry. We show that the transition metal oxides wit…
Robustness of a topological phase: Topological color code in parallel magnetic field
Saeed S. Jahromi, Mehdi Kargarian, S Farhad Masoudi +1
The robustness of the topological color code, which is a class of error correcting quantum codes, is investigated under the influence of an uniform magnetic field on the honeycomb…
Unusual magnetic phases in the strong interaction limit of two-dimensional topological band insulators in transition metal oxides
Mehdi Kargarian, Abdollah Langari, Gregory A. Fiete
The expected phenomenology of non-interacting topological band insulators (TBI) is now largely theoretically understood. However, the fate of TBIs in the presence of interactions r…
Doping the Kane-Mele-Hubbard model: A Slave-Boson Approach
Jun Wen, Mehdi Kargarian, Abolhassan Vaezi +1
We study the Kane-Mele-Hubbard model both at half-filling and away from half-filling using a slave-boson mean-field approach at zero temperature. We obtain a phase diagram at half-…
Topological Insulators and Quantum Spin Liquids
Gregory A. Fiete, Victor Chua, Mehdi Kargarian +4
In this paper we review some connections recently discovered between topological insulators and certain classes of quantum spin liquids, focusing on two and three spatial dimension…
Topological insulators and fractional quantum Hall effect on the ruby lattice
Xiang Hu, Mehdi Kargarian, Gregory A. Fiete
We study a tight-binding model on the two-dimensional ruby lattice. This lattice supports several types of first and second neighbor spin-dependent hopping parameters in an -ban…
Competing Exotic Topological Insulator Phases in Transition Metal Oxides on the Pyrochlore Lattice with Distortion
Mehdi Kargarian, Jun Wen, Gregory A. Fiete
In this work we investigate the phase diagram of heavy (4d and 5d) transition metal oxides on the pyrochlore lattice, such as those of the form , where A is a r…
Topological phases and phase transitions on the square-octagon lattice
Mehdi Kargarian, Gregory A. Fiete
We theoretically investigate a tight binding model of fermions hopping on the square-octagon lattice which consists of a square lattice with plaquette corners themselves decorated…