2023
DOI: 10.1103/physrevlett.130.106501
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Spin, Charge, and η -Spin Separation in One-Dimensional Photodoped Mott Insulators

Abstract: We show that effectively cold metastable states in one-dimensional photodoped Mott insulators described by the extended Hubbard model exhibit spin, charge, and η-spin separation. Their wave functions in the large on-site Coulomb interaction limit can be expressed as jΨi ¼ jΨ charge ijΨ spin ijΨ η−spin i, which is analogous to the Ogata-Shiba states of the doped Hubbard model in equilibrium. Here, the η-spin represents the type of photo-generated pseudoparticles (doublon or holon). jΨ charge i is determined by … Show more

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Cited by 13 publications
(2 citation statements)
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“…More specifically, it is known that a certain portion of the Si-dopants form deep DX-centers whose presence leads to the persistent photo-conductivity effect [25,26]. The mechanism described above is somewhat similar to the one employed in novel photo-doped 2D materials [28,29]. In the latter case, charge carriers are also selectively generated in the photo-doped regions and then tunnel to the 2D conducting layer.…”
Section: Figurementioning
confidence: 90%
“…More specifically, it is known that a certain portion of the Si-dopants form deep DX-centers whose presence leads to the persistent photo-conductivity effect [25,26]. The mechanism described above is somewhat similar to the one employed in novel photo-doped 2D materials [28,29]. In the latter case, charge carriers are also selectively generated in the photo-doped regions and then tunnel to the 2D conducting layer.…”
Section: Figurementioning
confidence: 90%
“…[57], it was pointed out that photodoping effectively reduces J ex , like chemical doping. This behavior can be intuitively understood since the doping reduces the number of singly occupied sites, so that the probability of finding spins on neighboring sites which develop correlations is reduced [58]. With the type-0 protocol, as time evolves, more particles are excited across the gap to reduce J ex , which competes with the effects of the virtual excitations.…”
Section: Extraction Of Exchange Couplingsmentioning
confidence: 99%