Zobrazeno 1 - 10
of 225
pro vyhledávání: '"Manousakis, Efstratios"'
Autor:
Manousakis, Efstratios
Publikováno v:
Phys. Rev. Materials 8, 084004 (2024)
There are many reports of a surprisingly high charge-carrier density with sizable mobility in photo-excited two-dimensional (2D) halide perovskites despite their unusually high exciton binding-energy. In this work we study the thermodynamic quasi-equ
Externí odkaz:
http://arxiv.org/abs/2408.10097
Publikováno v:
Phys RevB. 108 214431 (2023)
Beginning from the conventional square-lattice nearest-neighbor antiferromagnetic Heisenberg model, we allow the $J_x$ and $J_y$ couplings to be anisotropic, with their values depending on the bond orientation. The emergence of anisotropic, bond-depe
Externí odkaz:
http://arxiv.org/abs/2312.17028
Autor:
Manousakis, Efstratios
Publikováno v:
Phys. Rev. B 108 045130 (2023)
In this paper we analyze the band-structure of two-dimensional (2D) halide perovskites by considering structures related to the simpler case of the series, (BA)$_2$PbI$_4$, in which PbI$_4$ layers are intercalated with butylammonium (BA=CH$_3$(CH$_2$
Externí odkaz:
http://arxiv.org/abs/2307.09464
Autor:
Manousakis, Efstratios
Publikováno v:
Physical Review B, 107, 075105 (2023)
In this paper, first, we present a general formulation to investigate the ground-state and elementary excitations of an excitonic insulator (EI) in real materials. In addition, we discuss the out-of-equilibrium state induced (albeit transiently) by h
Externí odkaz:
http://arxiv.org/abs/2302.01230
Autor:
Manousakis, Efstratios
Publikováno v:
Physics Letters B Vol 829, 137049 (2022)
In order to investigate the origin of matter-antimatter asymmetry in the Universe, we adopt a theoretical framework where the standard model emerges as a Poincar\'e invariant field theory localized at a domain-antidomain wall (DW-aDW) brane pair of a
Externí odkaz:
http://arxiv.org/abs/2204.03617
Publikováno v:
Phys. Rev. B 106, 054511 (2022)
We study the emergence of topological superconductivity in a two-dimensional (2D) Weyl system, composed of stacked Su-Schrieffer-Heeger (SSH) chains. A previous analysis of the model showed that the addition of an attractive Hubbard interaction betwe
Externí odkaz:
http://arxiv.org/abs/2203.12004
We present a method for optimizing the location of the fermion ground-state nodes using a combination of diffusion Monte Carlo (DMC) and projected gradient descent (PGD). A PGD iteration shifts the parameters of an arbitrary node-fixing trial functio
Externí odkaz:
http://arxiv.org/abs/2112.14182
Publikováno v:
Phys. Rev. B 104, 134511 (2021)
We consider a three-dimensional model of coupled Su-Schrieffer-Heeger (SSH) chains. The analytically soluble model discussed here reliably reproduces the features of the band structure of crystalline polyacetylene as obtained from density-functional
Externí odkaz:
http://arxiv.org/abs/2110.10686
Autor:
Zheng, Wenkai, Schönemann, Rico, Mozaffari, Shirin, Chiu, Yu-Che, Goraum, Zachary Bryce, Aryal, Niraj, Manousakis, Efstratios, Siegrist, Theo M., Wei, Kaya, Balicas, Luis
Publikováno v:
Phys. Rev. B 102, 125103 (2020)
Here, we present a study on the Fermi-surface of the Dirac type-II semi-metallic candidate NiTe$_2$ via the temperature and angular dependence of the de Haas-van Alphen (dHvA) effect measured in single-crystals grown through Te flux. In contrast to i
Externí odkaz:
http://arxiv.org/abs/2009.01153