Mott transition with holographic spectral function
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2018)077
Abstract: A bstractWe show that the Mott transition can be realized in a holographic model of a fermion with bulk mass, m, and a dipole interaction of coupling strength p. The phase diagram contains gapless, pseudo-gap… read more here.
Keywords: spectral function; transition holographic; mott transition; holographic model ... See more keywords
Doping-induced states near the Mott transition in the presence of antiferromagnetic order
Sign Up to like & getrecommendations! Published in 2018 at "AIP Advances"
DOI: 10.1063/1.5042819
Abstract: A central issue of the Mott transition is how electronic states change in the Mott transition. Here, by taking into account spin fluctuation around the mean-field state using the random-phase approximation, electronic states exhibiting the… read more here.
Keywords: transition; presence antiferromagnetic; antiferromagnetic order; mott transition ... See more keywords
Effects of Si doping well beyond the Mott transition limit in GaN epilayers grown by plasma-assisted molecular beam epitaxy
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/ac3457
Abstract: The effects of Si doping well beyond the Mott transition limit on the structural, electrical, and optical properties of plasma assisted molecular beam epitaxy grown GaN layers were studied. Si doping up to a doping… read more here.
Keywords: doping well; transition limit; mott transition; beyond mott ... See more keywords
Complexity of the dipolar exciton Mott transition in GaN/(AlGa)N nanostructures
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.045308
Abstract: The Mott transition from a dipolar excitonic liquid to an electron-hole plasma is demonstrated in a wide GaN/(Al,Ga)N quantum well at $T=7$K by means of spatially-resolved magneto-photoluminescence spectroscopy. Increasing optical excitation density we drive the… read more here.
Keywords: mott; gan; mott transition; energy ... See more keywords
Valence skipping, internal doping, and site-selective Mott transition in PbCoO3 under pressure
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.235101
Abstract: We present a computational study of PbCoO3 at ambient and elevated pressure. We employ the static and dynamic treatment of local correlation in form of density functional theory + U (DFT+U) and + dynamical mean-field… read more here.
Keywords: selective mott; internal doping; mott transition; site selective ... See more keywords
Persistence of fermionic spin excitations through a genuine Mott transition in κ -type organics
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.125130
Abstract: We investigate the continuous variation of electronic states from a Fermi liquid to a quantum spin liquid induced by chemical substitution in the organic dimer-Mott system of κ-[(BEDSeTTF)x(BEDT-TTF)1−x]2Cu[N(CN)2]Br. Electrical transport measurements reveal that the mixing… read more here.
Keywords: genuine mott; mott transition; spin excitations; fermionic spin ... See more keywords
Mott transition controlled by lattice-orbital coupling in 3 d -metal-doped double-layer ruthenates
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.205105
Abstract: We have investigated unusual phase transitions that were triggered by chemical doping in $\mathrm{C}{\mathrm{a}}_{3}\mathrm{R}{\mathrm{u}}_{2}{\mathrm{O}}_{7}$. Our experiments showed that doping with a few percent of Mn ($g4%$) can change the quasi-two-dimensional metallic state of $\mathrm{C}{\mathrm{a}}_{3}\mathrm{R}{\mathrm{u}}_{2}{\mathrm{O}}_{7}$ into… read more here.
Keywords: mathrm mathrm; lattice orbital; mott transition; mathrm ... See more keywords
Mott transition in the π-flux SU(4) Hubbard model on a square lattice
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.195122
Abstract: We employ the projector quantum Monte Carlo simulations to study the ground-state properties of the square-lattice SU(4) Hubbard model with a $\pi$ flux per plaquette. In the weak coupling regime, its ground state is in… read more here.
Keywords: hubbard model; flux hubbard; transition; mott transition ... See more keywords
Continuous Mott Transition in Moiré Semiconductors: Role of Long-Wavelength Inhomogeneities.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.066301
Abstract: Recent experiments in moiré transition metal dichalcogenide materials have reported the observation of a continuous bandwidth-tuned transition from a metal to a paramagnetic Mott insulator at a fixed filling of one electron per moiré unit… read more here.
Keywords: mott transition; continuous mott; wavelength inhomogeneities; long wavelength ... See more keywords
Mott Transition in the Hubbard Model on Anisotropic Honeycomb Lattice with Implications for Strained Graphene: Gutzwiller Variational Study
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Molecular Sciences"
DOI: 10.3390/ijms24021509
Abstract: The modification of interatomic distances due to high pressure leads to exotic phenomena, including metallicity, superconductivity and magnetism, observed in materials not showing such properties in normal conditions. In two-dimensional crystals, such as graphene, atomic… read more here.
Keywords: hubbard; strain; gutzwiller; honeycomb lattice ... See more keywords