Observation of negatively charged excitons<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">X</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>in semiconductor quantum wells

Kheng, K.; Cox, R.T.; Aubigné, Merle Y. d’; Bassani, F.; Saminadayar, K.; Tatarenko, S.

doi:10.1103/physrevlett.71.1752

Cited by 702 publications

(531 citation statements)

References 13 publications

Supporting

Mentioning

510

Contrasting

Unclassified

Order By: Relevance

“…However, their binding energies being extremely small in bulk materials, clear experimental evidences [3][4][5] of these exciton-electron bound states have been achieved recently only, due to the development of good semiconductor quantum wells, the reduction of dimensionality enhancing all binding energies.…”

mentioning

confidence: 99%

The trion as an exciton interacting with a carrier

Combescot

Betbeder‐Matibet

2003

Solid State Communications

View full text Add to dashboard Cite

The X − trion is essentially an electron bound to an exciton. However, due to the composite nature of the exciton, there is no way to write an exciton-electron interaction potential. We can overcome this difficulty by using a commutation technique similar to the one we introduced for excitons interacting with excitons, which allows to take exactly into account the close-to-boson character of the excitons. From it, we can obtain the X − trion creation operator in terms of exciton and electron. We can also derive the X − trion ladder diagram between an exciton and an electron.These are the basic tools for future works on many-body effects involving trions.PACS number : 71.35.-y Excitons and related phenomena 1

show abstract

mentioning

confidence: 99%

The trion as an exciton interacting with a carrier

Combescot

Betbeder‐Matibet

2003

Solid State Communications

View full text Add to dashboard Cite

show abstract

“…Such a 3-fermion particle can be deuterium atom made of one electron, one proton and one neutron. Other possibilities are H − ion made of two opposite-spin electrons and one proton, or X − semiconductor trion [6][7][8][9][10][11][12][13] in which proton is replaced by valence hole. While deuterium is neutral, both H − ion and X − semiconductor trion are negatively charged.…”

Section: E-mail Addressmentioning

confidence: 99%

Effect of fermionic components on trion–electron scattering

Combescot¹,

Betbeder‐Matibet²,

Dupertuis³

2008

Solid State Communications

View full text Add to dashboard Cite

a b s t r a c tTo test the validity of replacing a composite fermion by an elementary fermion, we calculate the transition rate from a state made of one free electron and one trion to a similar electron-trion pair, through the time evolution of such a pair induced by Coulomb interaction between elementary fermions. It is convenient to describe trion as one electron interacting with one exciton. This allows us to use the tools we have developed in the new composite-exciton many-body theory. The trion-electron scattering contains a direct channel in which ''in'' and ''out'' trions are made with the same fermions, and an exchange channel in which the ''in'' free electron becomes one of the ''out'' trion components. As expected, momenta are conserved in these two channels. The direct scattering is found to read as the bare Coulomb potential between elementary particles multiplied by a form factor which depends on the ''in'' and ''out'' trion relative motion indices η and η , this factor reducing to δ ηη in the zero momentum transfer limit. In this direct channel, the trion at large distance reacts as an elementary particle, its composite nature showing up at large momentum transfer. In contrast, the fact that the trion is not elementary does affect the exchange channel for all momentum transfers. We thus conclude that a 3-component fermion behaves as an elementary fermion for direct processes in the small momentum transfer limit only.

show abstract

“…Some of the most fundamental concepts developed to understand these phenomena are the fractionally charged Laughlin quasiparticles (QP's) [4][5][6] and composite fermions (CF's) [7]. However, also the optical and spin properties of the 2DEG have been intensively studied in this regime, both experimentally [8][9][10] and theoretically [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence of Charged Excitons in Fractional Quantum Hall Systems

Wójs

2004

Acta Phys. Pol. A

View full text Add to dashboard Cite

Neutral and charged excitonic complexes formed in integral and fractional quantum Hall systems are discussed. They are bound states of a small number of charged quasiparticles (e.g., conduction electrons and valence holes, reversed-spin electrons and spin holes, Laughlin quasielectrons and quasiholes, composite fermions) that occur in an electron system under specific conditions (electron density, well width, electric and magnetic fields, etc.). The examples are interband neutral and charged excitons, "anyon excitons", spin waves, skyrmions, and "skyrmion excitons". Their possible decay processes include radiative recombination, experimentally observed in photoluminescence or far infrared emission, or spin transitions, important in the context of nuclear spin relaxation.

show abstract

Observation of negatively charged excitonsX−in semiconductor quantum wells

Cited by 702 publications

References 13 publications

The trion as an exciton interacting with a carrier

The trion as an exciton interacting with a carrier

Effect of fermionic components on trion–electron scattering

Photoluminescence of Charged Excitons in Fractional Quantum Hall Systems

Contact Info

Product

Resources

About