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Robustness of Trion State in Gated Monolayer MoSe2 under Pressure

Li, Zeya (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China.
Qin, Feng (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China.
Ong, Chin Shen (författare)
Uppsala universitet,Materialteori
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Huang, Junwei (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China.
Xu, Zian (författare)
Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
Chen, Peng (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China.
Qiu, Caiyu (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China.
Zhang, Xi (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210000, Peoples R China.
Zhang, Caorong (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210000, Peoples R China.
Zhang, Xiuxiu (författare)
Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
Eriksson, Olle, 1960- (författare)
Uppsala universitet,Institutionen för fysik och astronomi,Örebro Univ, Sch Sci & Technol, S-70182 Örebro, Sweden.
Rubio, Angel (författare)
Max Planck Inst Struct & Dynam Matter, Ctr Free Electron Laser Sci, Hamburg D-22761, Germany.;Simons Fdn, Flatiron Inst, Ctr Computat Quantum Phys, New York, NY 10010 USA.;Univ Basque Country UPV EHU, Nanobio Spect Grp, San Sebastian 20018, Spain.
Tang, Peizhe (författare)
Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.;Max Planck Inst Struct & Dynam Matter, Ctr Free Electron Laser Sci, Hamburg D-22761, Germany.
Yuan, Hongtao (författare)
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China.
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Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China;Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210023, Peoples R China. Materialteori (creator_code:org_t)
American Chemical Society (ACS), 2023
2023
Engelska.
Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 23:22, s. 10282-10289
Relaterad länk:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Quasiparticles consisting of correlated electron(s) and hole(s), such as excitons and trions, play important roles in the optical phenomena of van der Waals semiconductors and serve as unique platforms for studies of many-body physics. Herein, we report a gate-tunable exciton-to-trion transition in pressurized monolayer MoSe2, in which the electronic band structures are modulated continuously within a diamond anvil cell. The emission energies of both the exciton and trion undergo large blueshifts over 90 meV with increasing pressure. Surprisingly, the trion binding energy remains constant at 30 meV, regardless of the applied pressure. Combining ab initio density functional theory calculations and quantum Monte Carlo simulations, we find that the remarkable robustness of the trion binding energy originates from the spatially diffused nature of the trion wave function and the weak correlation between its constituent electron-hole pairs. Our findings shed light on the optical properties of correlated excitonic quasiparticles in low-dimensional materials.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

two-dimensional materials
exciton
trion
pressure engineering
electrostatic gating
photoluminescence

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