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Doublon-holon pairing state in photodoped Mott insulators
ID Ueda, Ryota (Author), ID Sarkar, Madhumita (Author), ID Lenarčič, Zala (Author), ID Golež, Denis (Author), ID Kuroki, Kazuhiko (Author), ID Kaneko, Tatsuya (Author)

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Abstract
We demonstrate the existence of an unconventional pairing state in photodoped Mott insulators on ladder and quasi-two-dimensional geometries, characterized by quasi-long-range doublon-holon correlations that signal Mott exciton condensation. The doublon-holon pairing exhibits correlations of d-wave-like symmetry, reminiscent of superconducting pairing in chemically doped Mott insulators. By constructing the phase diagram, using density matrix renormalization group, we reveal that the doublon-holon pairing state in the photodoped ladder emerges between the spin-singlet, charge-density-wave, and $\eta$-pairing phases. Our study suggests that the interplay of charge, spin, and $\eta$-spin degrees of freedom can give rise to exotic quantum many-body states in photodoped Mott insulators.

Language:English
Keywords:condensed matter physics, pairing mechanisms, photoinduced effect, Mott insulators, quantum many-body systems, strongly correlated systems, density matrix renormalization group, Hubbard model
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FMF - Faculty of Mathematics and Physics
Publication status:Published
Publication version:Author Accepted Manuscript
Year:2026
Number of pages:Str. L161109-1-L161109-8
Numbering:Vol. 113, iss. 16
PID:20.500.12556/RUL-181716 This link opens in a new window
UDC:538.9
ISSN on article:2469-9950
DOI:10.1103/dc6n-hrzj This link opens in a new window
COBISS.SI-ID:275132931 This link opens in a new window
Publication date in RUL:14.04.2026
Views:380
Downloads:219
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Record is a part of a journal

Title:Physical review
Publisher:American Physical Society
ISSN:2469-9950
COBISS.SI-ID:2997348 This link opens in a new window

Secondary language

Language:Slovenian
Keywords:fizika kondenzirane snovi, fotoinducirani pojavi, Mottovi izolatorji, kvantni večdelčni sistemi, močno korelirani sistemi, renormalizacijska grupa gostotne matrike, Hubbardov model

Projects

Funder:Other - Other funder or multiple funders
Funding programme:Japan Society for the Promotion of Science
Project number:JP20H01849
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Funding programme:Japan Society for the Promotion of Science
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Funding programme:The University of Osaka
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Name:InteractiveMaterials Science Cadet Program
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Funding programme:Japan Science and Technology Agency
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Funder:UKRI - UK Research and Innovation
Project number:EP/Y005090/1
Name:Quantum digital twins for quantum dynamics based on hardware-tailored tensor networks
Funder:EC - European Commission
Project number:ERA NET-ERA NET-T-NiSQ-101017733
Name:Tensor Networks in Simulation of Quantum matter
Acronym:T-NiSQ
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0044-2022
Name:Teorija trdnih snovi in statistična fizika
Funder:EC - European Commission
Project number:101077265
Name:Weakly driven quantum symmetries
Acronym:DrumS
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:MN-0016-106
Name:Multi-scale modelling of nonequIlibrium quantum materials
Acronym:MINIMUM
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J1-2455-2020
Name:Modeliranje neravnovesnih kvantnih materialov na različnih skalah

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