Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Parhizgar, Fariborz"'
Publikováno v:
Physical Review B 107, 014512 (2023)
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 defects break time-reversal invariance and, consequently, time-reversal in
Externí odkaz:
http://arxiv.org/abs/2211.02745
Publikováno v:
Phys. Rev. Research 3, 033255 (2021)
The possible symmetries of the superconducting pair amplitude is a consequence of the fermionic nature of the Cooper pairs. For spin-$1/2$ systems this leads to the $\mathcal{SPOT}=-1$ classification of superconductivity, where $\mathcal{S}$, $\mathc
Externí odkaz:
http://arxiv.org/abs/2106.11983
Publikováno v:
Phys. Rev. B 104, 054507 (2021)
The Meissner effect is one of the defining properties of superconductivity, with a conventional superconductor completely repelling an external magnetic field. In contrast to this diamagnetic behavior, odd-frequency superconducting pairing has often
Externí odkaz:
http://arxiv.org/abs/2103.12613
Publikováno v:
Commun Phys 5, 92 (2022)
Twisted bilayer graphene (TBG) develops large moir\'e patterns at small twist angles with flat energy bands hosting domes of superconductivity. The large system size and intricate band structure have however hampered investigations into the supercond
Externí odkaz:
http://arxiv.org/abs/2101.11555
Highly tunable magnetic coupling in ultrathin topological insulator films due to impurity resonances
We theoretically investigate the exchange interaction between magnetic impurities in ultrathin Bi$_2$Se$_3$ topological insulator films by taking into account the low-energy states produced by the impurities. We find that the locally induced impurity
Externí odkaz:
http://arxiv.org/abs/2003.05539
Publikováno v:
Phys. Rev. B 101, 064514 (2020)
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 reflection. In this work we study all possible superconducting pairing induce
Externí odkaz:
http://arxiv.org/abs/1911.04388
Publikováno v:
Phys. Rev. B 101, 180512(R) (2020)
Doped Bi$_2$Se$_3$ is proposed to be a nematic superconductor originating from unusual inter-orbital pairing. We classify all induced superconducting pair correlations in Bi$_2$Se$_3$ and discover that intra-orbital odd-frequency pairing dominates ov
Externí odkaz:
http://arxiv.org/abs/1909.02921
Publikováno v:
npj Quantum Materials (2020) 5:42
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-polarization. The large density of states of the drumhead states makes WNL semime
Externí odkaz:
http://arxiv.org/abs/1810.09687
Due to low dimensionality, the controlled stacking of the graphene films and their electronic properties are susceptible to environmental changes including strain. The strain-induced modification of the electronic properties such as the emergence and
Externí odkaz:
http://arxiv.org/abs/1809.08555
Publikováno v:
Phys. Rev. B 97, 180402 (2018)
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 insulator. The interaction is composed of an isotropic Heisenberg, and
Externí odkaz:
http://arxiv.org/abs/1801.07125