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dc.contributor.authorPrice, Gregory
dc.date.accessioned2019-02-13T20:00:10Z
dc.date.available2019-02-13T20:00:10Z
dc.date.issued2/13/2019
dc.identifier.urihttp://hdl.handle.net/10675.2/622086
dc.descriptionPresentation given at the 20th Annual Phi Kappa Phi Student Research and Fine Arts Conferenceen
dc.description.abstractResonant inelastic x-ray scattering (RIXS) is a novel spectroscopic method for probing charge and spin excitations in quantum magnets. In one dimension, where quantum fluctuations are most prominent, a system of interacting electrons can support fractionalized spinless charge excitations (holons) and chargeless spin excitation (spinons). Currently, X-ray spectroscopic techniques such as RIXS can excite the O K-edge core electrons of correlated quantum magnets to probe the physical nature of the above mentioned spin-charge separated state. Using exact diagonalization we investigate the O K-edge RIXS response of the one dimensional antiferromagnetic spin chain compound with nearest and next-nearest neighbor hoppings. We also study the spin-anisotropic version of the same model. Interaction of the core electrons with the X-rays generate multi-spinon excitations in the RIXS spectrum, for example in strontium copper oxide. We find that the RIXS spectrum of the t1-t2-J model with spin anisotropy presents a rich source of physical information, including allowing us to identify microscopic pathways for how the quantum spin fluctuations control the appearance of the four spinon excitations observed in the isotropic O K-edge spectrum.
dc.subject1d spin chainen
dc.subjectO K -edge RIXSen
dc.titleExact diagonalization RIXS studies of the doped 1d t1-t2-J model at the O K-edgeen
dc.typeOral Presentationen
dc.contributor.departmentDepartment of Chemistry & Physicsen
cr.funding.sourceAugusta University CURS Summer Scholars Programen
dc.contributor.affiliationAugusta Universityen
dc.contributor.sponsorDatta, Trinanjanen
html.description.abstractResonant inelastic x-ray scattering (RIXS) is a novel spectroscopic method for probing charge and spin excitations in quantum magnets. In one dimension, where quantum fluctuations are most prominent, a system of interacting electrons can support fractionalized spinless charge excitations (holons) and chargeless spin excitation (spinons). Currently, X-ray spectroscopic techniques such as RIXS can excite the O K-edge core electrons of correlated quantum magnets to probe the physical nature of the above mentioned spin-charge separated state. Using exact diagonalization we investigate the O K-edge RIXS response of the one dimensional antiferromagnetic spin chain compound with nearest and next-nearest neighbor hoppings. We also study the spin-anisotropic version of the same model. Interaction of the core electrons with the X-rays generate multi-spinon excitations in the RIXS spectrum, for example in strontium copper oxide. We find that the RIXS spectrum of the t1-t2-J model with spin anisotropy presents a rich source of physical information, including allowing us to identify microscopic pathways for how the quantum spin fluctuations control the appearance of the four spinon excitations observed in the isotropic O K-edge spectrum.


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