Abstract
Shear interferometry is used to study the coherent properties of a dense ensemble of triplet cyclotron magnetoexcitons in a quantum Hall dielectric near a filling factor of \(\nu = 2\). Compared to the gas of uncondensed magnetoexcitons, the magnetoexciton condensate formed at fairly low temperatures by nonresonant photoexcitation is found to have an increased degree of coherence. Its transverse coherence length reaches ~10 µm in order of magnitude. The fraction of the condensate can be as high as 20% of the total number of triplet magnetoexcitons.
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REFERENCES
Dickmann, S. and Kukushkin, I.V., Phys. Rev. B, 2005, vol. 71, 241310.
Kulik, L.V., Kukushkin, I.V., Dickmann, S., et al., Phys. Rev. B, 2005, vol. 72, 073304.
Kallin, C. and Halperin, B.I., Phys. Rev. B, 1985, vol. 31, p. 3635.
Dickmann, S., Phys. Rev. Lett., 2013, vol. 110, 166801.
Kulik, L.V., Zhuravlev, A.S., Dickmann, S., et al., Nat. Commun., 2016, vol. 7, 13499.
Keldysh, L.V., Contemp. Phys., 1986, vol. 27, p. 395.
Anglin, J.R. and Ketterle, W., Nature, 2002, vol. 416, p. 211.
Avron, J.E., Herbst, I.W., and Simon, B., Ann. Phys. (New York), 1978, vol. 114, p. 431.
Dickmann, S., JETP Lett., 2019, vol. 109, p. 63.
Dickmann, S., Lith. J. Phys., 2019, vol. 59, p. 79.
Kulik, L.V., Kuznetsov, V.A., Zhuravlev, A.S., et al., Sci. Rep., 2018, vol. 8, 10948.
Kulik, L.V., Gorbunov, A.V., Zhuravlev, A.S., et al., Appl. Phys. Lett., 2019, vol. 114, 062403.
Gorbunov, A.V. and Timofeev, V.B., Low Temp. Phys., 2016, vol. 42, p. 340.
High, A.A., Leonard, J.R., Hammack, A.T., et al., Nature, 2012, vol. 483, p. 584.
Deng, H., Haug, H., and Yamamoto, Y., Rev. Mod. Phys., 2010, vol. 82, p. 1489.
Born, M. and Wolf, E., Principles of Optics, Oxford: Pergamon, 1964.
Hohenberg, P.C., Phys. Rev., 1967, vol. 158, p. 383.
Berezinskii, V.L., Sov. Phys. JETP, 1971, vol. 34, p. 610.
Kosterlitz, J.M. and Thouless, D.J., J. Phys. C, 1973, vol. 6, p. 1181.
Roumpos, G., Lohse, M., Nitsche, W.H., et al., Proc. Natl. Acad. Sci. U. S. A., 2012, vol. 109, p. 6467.
Kulik, L.V., Gorbunov, A.V., Zhuravlev, A.S., et al., Sci. Rep., 2015, vol. 5, 10354.
Zhuravlev, A.S., Kuznetsov, V.A., Kulik, L.V., et al., Phys. Rev. Lett., 2016, vol. 117, 196802.
Kuznetsov, V.A., Kulik, L.V., Velikanov, M.D., et al., Phys. Rev. B, 2018, vol. 98, 205303.
Heidin, L., Lundqvist, B.I., and Lundqvist, S., Solid State Commun., 1967, vol. 5, p. 237.
Zhuravlev, A.S., Kuznetsov, V.A., Gorbunov, A.V., et al., JETP Lett., 2019, vol. 110, p. 260.
Nitsche, W.H., Kim, N.Y., Roumpos, G., et al., Phys. Rev. A, 2016, vol. 93, 053622.
Nitsche, W.H., Kim, N.Y., Roumpos, G., et al., Phys. Rev. B, 2014, vol. 90, 205430.
ACKNOWLEDGMENTS
The authors are grateful to V.D. Kulakovskii for valuable discussions of the obtained results.
Funding
This work was supported by the Russian Science Foundation, project no. 21-12-00368.
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Translated by A. Ivanov
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Gorbunov, A.V., Timofeev, V.B. Coherent Properties of a Magnetoexciton Condensate in a Hall Dielectric. Bull. Russ. Acad. Sci. Phys. 86, 380–385 (2022). https://doi.org/10.3103/S1062873822040104
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DOI: https://doi.org/10.3103/S1062873822040104