54 citations · 571 across the 23 of their papers we have counts for
23 papers
Detrimental effects of disorder in two-dimensional time-reversal invariant topological superconductors
Mahdi Mashkoori, Fariborz Parhizgar, Stephan Rachel +1
The robustness against local perturbations, as long as the symmetry of the system is preserved, is a distinctive feature of topological quantum states. Magnetic impurities and defe…
Superconductivity in spin- systems: symmetry classification, odd-frequency pairs, and Bogoliubov Fermi surfaces
Paramita Dutta, Fariborz Parhizgar, Annica M. Black-Schaffer
The possible symmetries of the superconducting pair amplitude is a consequence of the fermionic nature of the Cooper pairs. For spin- systems this leads to the $\mathcal{SPOT}…
Dia- and paramagnetic Meissner effect from odd-frequency pairing in multi-orbital superconductors
Fariborz Parhizgar, Annica M. Black-Schaffer
The Meissner effect is one of the defining properties of superconductivity, with a conventional superconductor completely repelling an external magnetic field. In contrast to this…
Nematic superconductivity in magic-angle twisted bilayer graphene from atomistic modeling
Tomas Löthman, Johann Schmidt, Fariborz Parhizgar +1
Twisted bilayer graphene (TBG) develops large moiré patterns at small twist angles with flat energy bands hosting domes of superconductivity. The large system size and intricate ba…
Highly tunable magnetic coupling in ultrathin topological insulator films due to impurity resonances
Mahroo Shiranzaei, Jonas Fransson, Annica M. Black-Schaffer +1
We theoretically investigate the exchange interaction between magnetic impurities in ultrathin BiSe topological insulator films by taking into account the low-energy states…
Finite bulk Josephson currents and chirality blockade removal from inter-orbital pairing in magnetic Weyl semimetals
Paramita Dutta, Fariborz Parhizgar, Annica M. Black-Schaffer
Magnetic Weyl semimetals (WSMs) have been presumed to be immune to proximity-induced spin-singlet superconducting pairing due to a chirality blockade of the regular Andreev reflect…
Odd-frequency superconductivity and Meissner effect in the doped topological insulator BiSe
Johann Schmidt, Fariborz Parhizgar, Annica M. Black-Schaffer
Doped BiSe is proposed to be a nematic superconductor originating from unusual inter-orbital pairing. We classify all induced superconducting pair correlations in BiSe$…
Large Josephson current in Weyl nodal loop semimetals due to odd-frequency superconductivity
Fariborz Parhizgar, Annica M. Black-Schaffer
Weyl nodal loop semimetals (WNLs) host a closed nodal line loop Fermi surface in the bulk, protected zero-energy flat band, or drumhead, surface states, and strong spin-polarizatio…
Strain impacts on commensurate bilayer graphene superlattices: distorted trigonal warping, emergence of bandgap and direct-indirect bandgap transition
Zahra Khatibi, Afshin Namiranian, Fariborz Parhizgar
Due to low dimensionality, the controlled stacking of the graphene films and their electronic properties are susceptible to environmental changes including strain. The strain-induc…
Impact of topology on the impurity effects in extended -wave superconductors with spin-orbit coupling
M. Mashkoori, A. G. Moghaddam, M. H. Hajibabaee +2
We investigate the impact of topology on the existence of impurity subgap states in a time-reversal-invariant superconductor with an extended -wave pairing and strong spin-orbit…
Non-Linear Spin Susceptibility in Topological Insulators
Mahroo Shiranzaei, Jonas Fransson, Hosein Cheraghchi +1
We theoretically study the effect of impurity resonances on the indirect exchange interaction between magnetic impurities in the surface states of a three-dimensional topological i…
Strongly anisotropic RKKY interaction in monolayer black phosphorus
Moslem Zare, Fariborz Parhizgar, Reza Asgari
We theoretically study the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in two-dimensional black phosphorus, phosphorene. The RKKY interaction enhances significantly for the lo…
Quantum capacitance of double-layer graphene
Fariborz Parhizgar, Alireza Qaiumzadeh, Reza Asgari
We study the ground-state properties of a double layer graphene system with the Coulomb interlayer electron-electron interaction modeled within the random phase approximation. We f…
Impurity scattering on the surface of topological insulator thin films
Mahroo Shiranzaei, Fariborz Parhizgar, Jonas Fransson +1
We address the electronic structure of the surface states of topological insulator thin films with embedded local non-magnetic and magnetic impurities. Using the -matrix expansi…
Effect of Rashba splitting on RKKY interaction in topological insulator thin films
Mahroo Shiranzaei, Fariborz Parhizgar, Hosein Cheraghchi
In this work we have investigated the effect of Rashba splitting on the RKKY interaction in TI thin film both at finite and zero chemical potential. We find that the spin susceptib…
Highly tunable time-reversal-invariant topological superconductivity in topological insulator thin films
Fariborz Parhizgar, Annica M. Black-Schaffer
We study time-reversal-invariant topological superconductivity in topological insulator (TI) thin films including both intra- and inter-surface pairing. We find a nontrivial topolo…
Relaxation times and charge conductivity of silicene
Azadeh Mazloom, Fariborz Parhizgar, Saeed H. Abedinpour +1
We investigate the transport and single particle relaxation times of silicene in the presence of neutral and charged impurities. The static charge conductivity is studied using the…
Topological phase and edge states dependence of the RKKY interaction in zigzag silicene nanoribbon
Moslem Zare, Fariborz Parhizgar, Reza Asgari
We propose versatile materials based on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in a zigzag silicene nanoribbon (ZSNR) on half filling in the presence of an out-of-pla…
Optical responses and optical activity of ultrathin films of topological insulator
Fariborz Parhizgar, Ali G. Moghaddam, Reza Asgari
We investigate the optical properties of an ultrathin film of a topological insulator in the presence of an in-plane magnetic field. We show that due to the combination of the over…
Unconventional proximity-induced superconductivity in bilayer systems
Fariborz Parhizgar, Annica M. Black-Schaffer
We study the proximity-induced superconducting state in a general bilayer -- conventional -wave superconductor hybrid structure. For the bilayer we include a general parabolic d…
Magnetoresistance of double layer hybrid system in tilted magnetic field
Fariborz Parhizgar, Reza Asgari
Magnetoresistance and Hall coefficient of a graphene layer are investigated in the presence of a tilted magnetic field. We consider the graphene layer is assembled by either anothe…
Ruderman-Kittel-Kasuya-Yosida interaction in biased bilayer graphene
F. Parhizgar, M. Sherafati, Reza Asgari +1
We study the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between two contact magnetic impurities placed on bilayer graphene (BLG). We compute the interaction mediated by the c…
Indirect exchange interaction between magnetic adatoms in a monolayer MoS2
F. Parhizgar, H. Rostami, Reza Asgari
We study the Ruderman-Kittle-Kasuya-Yosida (RKKY) interaction in a monolayer MoS. We show that the rotation of the itinerant electron spin due to the spin-orbit coupling causes…