Browsing Fakülteler by Publisher "Amer Physical Soc"
Now showing items 1-12 of 12
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Assessment on lattice thermal properties of two-dimensional honeycomb structures: Graphene, h-BN, h-MoS2, and h-MoSe2
(Amer Physical Soc, 2014)The linear thermal expansion coefficients of two-dimensional honeycomb structures graphene, h-BN, h-MoS2, and h-MoSe2 are systematically studied by using first-principles based quasiharmonic approximation. This approach ... -
Edge states at the interface of non-Hermitian systems
(Amer Physical Soc, 2018)Topological edge states appear at the interface of two topologically distinct Hermitian insulators. We study the extension of this idea to non-Hermitian systems. We consider PT-symmetric and topologically distinct non-Hermitian ... -
Finite mass gravitating Yang monopoles
(Amer Physical Soc, 2008)We show that gravity cures the infrared divergence of the Yang monopole when a proper definition of conserved quantities in curved backgrounds is used, i.e. the gravitating Yang monopole in cosmological Einstein theory has ... -
Gamow-Teller 1(+) states in Bi-208
(Amer Physical Soc, 2005)The properties of the Gamow-Teller (GT) 1(+) states in Bi-208 have been investigated by using the Pyatov-Salamov method. The GT resonance (GTR) energy, the contribution of the GTR beta transition strength to the Ikeda sum ... -
Kerr-Taub-NUT spacetime with Maxwell and dilaton fields
(Amer Physical Soc, 2008)We present an exact solution describing a stationary and axisymmetric object with electromagnetic and dilaton fields. The solution generalizes the usual Kerr-Taub-NUT (Newman-Unti-Tamburino) spacetime in general relativity ... -
Majorana edge modes with gain and loss
(Amer Physical Soc, 2016)We consider a non-Hermitian generalization of the Kitaev model and study the existence of stable Majorana zero energy modes. We show that they exist in the limit of zero chemical potential even if balanced gain and loss ... -
Motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime and analytical solutions
(Amer Physical Soc, 2016)In this work, we study the motion of charged test particles in Kerr-Newman-Taub-NUT spacetime. We analyze the angular and the radial parts of the orbit equations and examine the possible orbit types. We also investigate ... -
Piezoelectricity in two-dimensional materials: Comparative study between lattice dynamics and ab initio calculations
(Amer Physical Soc, 2017)The elastic constant C-11 and piezoelectric stress constant e(1),(11) of two-dimensional (2D) dielectric materials comprising h-BN, 2H-MoS2, and other transition-metal dichalcogenides and dioxides are calculated using ... -
Significant effect of stacking on the electronic and optical properties of few-layer black phosphorus
(Amer Physical Soc, 2015)The effect of the number of stacking layers and the type of stacking on the electronic and optical properties of bilayer and trilayer black phosphorus are investigated by using first-principles calculations within the ... -
Stable topological edge states in a non-Hermitian four-band model
(Amer Physical Soc, 2018)We introduce a one-dimensional non-Hermitian four-band tight-binding lattice system. We find stable topological edge states protected by particle-hole and parity-time symmetries. We show that a topological phase appears ... -
Tailoring Storage Capacity and Ion Kinetics in Ti2CO2/Graphene Heterostructures by Functionalization of Graphene
(Amer Physical Soc, 2019)Using first-principles calculations, we evaluate the electrochemical performance of heterostructures made up of Ti2CO2 and chemically modified graphene for Li batteries. We find that heteroatom doping and molecule intercalation ... -
Thermal properties of black and blue phosphorenes from a first-principles quasiharmonic approach
(Amer Physical Soc, 2015)Different allotropes of phosphorene are possible of which black and blue phosphorus are the most stable. While blue phosphorus has isotropic properties, black phosphorus is strongly anisotropic in its electronic and optical ...