Spin-2 excitations in Gaiotto-Maldacena solutions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2019)231
Abstract: A bstractIn this paper we study spin-2 excitations for a class of N = 2 supersymmetric solutions of type-IIA supergravity found by Gaiotto and Maldacena. The mass spectrum of these excitations can be derived by… read more here.
Keywords: maldacena solutions; gaiotto maldacena; excitations gaiotto; spin excitations ... See more keywords
Structure of spin excitations in heavily electron-doped Li0.8Fe0.2ODFeSe superconductors
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/s41467-017-00162-x
Abstract: Heavily electron-doped iron-selenide high-transition-temperature (high-Tc) superconductors, which have no hole Fermi pockets, but have a notably high Tc, have challenged the prevailing s± pairing scenario originally proposed for iron pnictides containing both electron and hole… read more here.
Keywords: iron; heavily electron; spin excitations; electron doped ... See more keywords
Spin excitations and the Fermi surface of superconducting FeS
Sign Up to like & getrecommendations! Published in 2017 at "npj Quantum Materials"
DOI: 10.1038/s41535-017-0019-6
Abstract: High-temperature superconductivity occurs near antiferromagnetic instabilities and the nematic state. Debate remains on the origin of nematic order in FeSe and its relation with superconductivity. Here, we use transport, neutron scattering and Fermi surface measurements to demonstrate… read more here.
Keywords: nematic order; fermi surface; spin excitations; superconductivity ... See more keywords
Long-lifetime spin excitations near domain walls in 1T-TaS2
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2121740119
Abstract: Significance There is an intense ongoing search for two-level quantum systems with long lifetimes for applications in quantum communication and computation. Much research has been focused on studying isolated spins in semiconductors or band insulators.… read more here.
Keywords: excitations near; lifetime spin; spin; spin excitations ... See more keywords
Sub-wavelength spin excitations in ultracold gases created by stimulated Raman transitions
Sign Up to like & getrecommendations! Published in 2020 at "New Journal of Physics"
DOI: 10.1088/1367-2630/abb68a
Abstract: Raman transitions are used in quantum simulations with ultracold atoms for cooling, spectroscopy and creation of artificial gauge fields. Spatial shaping of the Raman fields allows local control of the effective Rabi frequency, which can… read more here.
Keywords: spin excitations; spin; raman; wavelength spin ... 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
Damped spin excitations in a doped cuprate superconductor with orbital hybridization
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.214508
Abstract: A resonant inelastic x-ray scattering study of overdamped spin excitations in slightly underdoped La2−x Srx CuO4 (LSCO) with x = 0.12 and 0.145 is presented. Three high-symmetry directions have been investigated: (1) the antinodal (0,0)… read more here.
Keywords: zone boundary; damped spin; hybridization; dispersion ... See more keywords
Ultrafast x-ray diffraction thermometry measures the influence of spin excitations on the heat transport through nanolayers
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.014306
Abstract: We investigate the heat transport through a rare earth multilayer system composed of Yttrium (Y), Dysprosium (Dy) and Niobium (Nb) by ultrafast X-ray diffraction. This is an example of a complex heat flow problem on… read more here.
Keywords: heat transport; ray diffraction; ultrafast ray; spin excitations ... See more keywords
Polarization-resolved Cu L3 -edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBa2Cu3O7−δ
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.134517
Abstract: RIXS spectra are populated by features due to orbital, charge, and spin excitations. The correct assignment is usually based on their energy and on the incident polarization dependence. In addition, several ambiguities can be lifted… read more here.
Keywords: edge resonant; polarization resolved; resolved edge; polarization ... See more keywords
Tuning Paramagnetic Spin Excitations of Single Adatoms.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.017203
Abstract: We predict the existence of paramagnetic spin excitations (PSE) in nonmagnetic single adatoms. Our calculations demonstrate that PSE develop a well-defined structure in the meV region when the adatom's Stoner criterion for magnetism is close… read more here.
Keywords: single adatoms; paramagnetic spin; tuning paramagnetic; excitations single ... See more keywords
Spin Waves in Detwinned BaFe_{2}As_{2}.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.067002
Abstract: Understanding magnetic interactions in the parent compounds of high-temperature superconductors forms the basis for determining their role for the mechanism of superconductivity. For parent compounds of iron pnictide superconductors such as AFe_{2}As_{2} (A=Ba, Ca, Sr),… read more here.
Keywords: spin waves; spin; spin excitations; waves detwinned ... See more keywords