Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Ghaemi, Pouyan"'
We explore the phase diagram of a twisted bilayer of strongly interacting electrons on a honeycomb lattice close to half-filling using the slave boson mean-field theory. Our analysis indicates that a variety of new phases can be realized as a functio
Externí odkaz:
http://arxiv.org/abs/2408.11888
Publikováno v:
Nano Letters 2024 24 (28), 8575-8579
Motivated by the recent experimental developments in van der Waals heterostructures, we investigate the emergent magnetism in Mott insulator - semimetal moir\'e superlattices by deriving effective spin models and exploring their phase diagram by Mont
Externí odkaz:
http://arxiv.org/abs/2403.18904
We study the Yu-Shiba-Rusinov states in materials with bulk band inversion such as iron-based topological superconductors or doped topological insulators. We show that the structure of the YSR state spectrum depends on the doping level relative to th
Externí odkaz:
http://arxiv.org/abs/2403.08028
Publikováno v:
PNAS 121, e2401644121 (2024)
Excitons are the neutral quasiparticles that form when Coulomb interactions create bound states between electrons and holes. Due to their bosonic nature, excitons are expected to condense and exhibit superfluidity at sufficiently low temperatures. In
Externí odkaz:
http://arxiv.org/abs/2311.04970
Autor:
Voinea, Cristian, Pu, Songyang, Kirmani, Ammar, Ghaemi, Pouyan, Rahmani, Armin, Papić, Zlatko
Publikováno v:
Phys. Rev. Research 6, 013105 (2024)
We propose a frustration-free model for the Moore-Read quantum Hall state on sufficiently thin cylinders with circumferences $\lesssim 7$ magnetic lengths. While the Moore-Read Hamiltonian involves complicated long-range interactions between triplets
Externí odkaz:
http://arxiv.org/abs/2309.04527
Publikováno v:
Phys. Rev. B 108, 064303 (2023)
Direct experimental detection of anyonic exchange statistics in fractional quantum Hall systems by braiding the excitations and measuring the wave-function phase is an enormous challenge. Here, we use a small, noisy quantum computer to emulate direct
Externí odkaz:
http://arxiv.org/abs/2303.04806
Autor:
Khatoniar, Mandeep, Yama, Nicholas, Ghazaryan, Areg, Guddala, Sriram, Ghaemi, Pouyan, Majumdar, Kausik, Menon, Vinod
Coherent control and manipulation of quantum degrees of freedom such as spins forms the basis of emerging quantum technologies. In this context, the robust valley degree of freedom and the associated valley pseudospin found in two-dimensional transit
Externí odkaz:
http://arxiv.org/abs/2211.08755
Publikováno v:
Phys. Rev. B 106, L201107 (2022)
We demonstrate the formation of robust zero energy modes close to magnetic impurities in the iron-based superconductor FeSe$_{1-x}$Te$_x$. We find that the Zeeman field generated by the impurity favors a spin-triplet inter-orbital pairing as opposed
Externí odkaz:
http://arxiv.org/abs/2207.12425
Autor:
Kirmani, Ammar, Bull, Kieran, Hou, Chang-Yu, Saravanan, Vedika, Saeed, Samah Mohamed, Papić, Zlatko, Rahmani, Armin, Ghaemi, Pouyan
Publikováno v:
Phys. Rev. Lett. 129, 056801 (2022)
Intermediate-scale quantum technologies provide new opportunities for scientific discovery, yet they also pose the challenge of identifying suitable problems that can take advantage of such devices in spite of their present-day limitations. In solid-
Externí odkaz:
http://arxiv.org/abs/2107.10267
Publikováno v:
New J. Phys. 23, 123042 (2021)
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 topological Kondo insulators can support surface states with an arbitr
Externí odkaz:
http://arxiv.org/abs/2012.11625