Resonance Raman Spectrum of Doped Epitaxial Graphene at the Lifshitz Transition.
Sign Up to like & getrecommendations! Published in 2018 at "Nano letters"
DOI: 10.1021/acs.nanolett.8b02979
Abstract: We employ ultra-high vacuum (UHV) Raman spectroscopy in tandem with angle-resolved photoemission (ARPES) to investigate the doping-dependent Raman spectrum of epitaxial graphene on Ir(111). The evolution of Raman spectra from pristine to heavily Cs doped… read more here.
Keywords: raman; lifshitz transition; raman spectrum; graphene ... See more keywords
Enhanced superconductivity accompanying a Lifshitz transition in electron-doped FeSe monolayer
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/ncomms14988
Abstract: The origin of enhanced superconductivity over 50 K in the recently discovered FeSe monolayer films grown on SrTiO3 (STO), as compared to 8 K in bulk FeSe, is intensely debated. As with the ferrochalcogenides AxFe2−ySe2 and potassium-doped… read more here.
Keywords: electron; lifshitz transition; enhanced superconductivity; monolayer ... See more keywords
Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4
Sign Up to like & getrecommendations! Published in 2019 at "npj Quantum Materials"
DOI: 10.1038/s41535-019-0185-9
Abstract: Pressure represents a clean tuning parameter for traversing the complex phase diagrams of interacting electron systems, and as such has proved of key importance in the study of quantum materials. Application of controlled uniaxial pressure… read more here.
Keywords: lifshitz transition; uniaxial stress; transition; direct observation ... See more keywords
Prediction of topological nontrivial semimetals and pressure-induced Lifshitz transition in 1T'-MoS2 layered bulk polytypes.
Sign Up to like & getrecommendations! Published in 2020 at "Nanoscale"
DOI: 10.1039/d0nr05208f
Abstract: Recently, bulk MoS2 crystals stacked by 1T'-MoS2 monolayers have been synthesized successfully, but little is known about their stacking sequences and topological properties. Based on first-principles calculations and symmetry-based indicator theory, we discovered that three… read more here.
Keywords: induced lifshitz; mos2; lifshitz transition; pressure induced ... See more keywords
Bond-breaking induced Lifshitz transition in robust Dirac semimetal VAI3
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.1917697117
Abstract: Significance Understanding the relation between crystal structure and electronic properties is crucial for designing new quantum materials with desired functionality. So far, controlling a chemical bond is less considered as an effective way to manipulate… read more here.
Keywords: bond; chemical bond; lifshitz transition; dirac semimetal ... See more keywords
Disappearance of Superconductivity and a Concomitant Lifshitz Transition in Heavily Overdoped Bi 2 Sr 2 CuO 6 Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/36/1/017402
Abstract: By partially doping Pb to effectively suppress the superstructure in single-layered cuprate Bi 2 Sr 2 CuO 6+δ (Pb-Bi2201) and annealing them in vacuum or in high pressure oxygen atmosphere, a series of high quality… read more here.
Keywords: resolved photoemission; spectroscopy; photoemission spectroscopy; lifshitz transition ... See more keywords
Signatures of Temperature-Driven Lifshitz Transition in Semimetal Hafnium Ditelluride
Sign Up to like & getrecommendations! Published in 2023 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/40/6/067101
Abstract: The temperature-driven change of the Fermi surface has been attracting attention recently as it is fundamental and essential to understand a metallic system. Here we report the magnetotransport anomalies in the semimetal HfTe2 single crystals.… read more here.
Keywords: driven lifshitz; temperature driven; signatures temperature; lifshitz transition ... See more keywords
de Haas–van Alphen oscillations near the Lifshitz transition from two electron pockets to one in the two-dimensional Dirac fermion systems
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.085412
Abstract: We theoretically study the de Haas--van Alphen (dHvA) oscillations in the system with changing the topology of the Fermi surface (the Lifshitz transition) by electron dopings. We employ the two-dimensional tight-binding model for $\ensuremath{\alpha}\text{\ensuremath{-}}{(\mathrm{BEDT}\text{\ensuremath{-}}\mathrm{TTF})}_{2}{\mathrm{I}}_{3}$ under… read more here.
Keywords: mathrm; lifshitz transition; ensuremath; dirac ... See more keywords
Anisotropic distortion and Lifshitz transition in alpha-Hf under pressure
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.115130
Abstract: In this work we report a theoretical investigation on behavior of the elastic constant C-44 and the transverse optical phonon mode E(2)g of a-Hf under pressure within the density functional theory. ... read more here.
Keywords: anisotropic distortion; lifshitz transition; transition alpha; distortion lifshitz ... See more keywords
Correlation-driven Lifshitz transition and orbital order in a two-band Hubbard model
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.045105
Abstract: We study by dynamical mean field theory a quarter-filled Hubbard model of two bands with different bandwidths. At half-filling, this model is known to display an orbital selective Mott transition, with the narrower band undergoing… read more here.
Keywords: hubbard model; lifshitz transition; order; transition ... See more keywords
Properties of the spin-liquid phase in the vicinity of the Lifshitz transition from Néel to spin-spiral state in frustrated magnets
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.144420
Abstract: Three decades ago Ioffe and Larkin pointed out a generic mechanism for the formation of a gapped spin liquid. In the case when a classical two-dimensional (2D) frustrated Heisenberg magnet undergoes a Lifshitz transition between… read more here.
Keywords: phase; lifshitz transition; liquid phase; spin spiral ... See more keywords