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First-principles method for impurities in quantum fluids: Positron in an electron gas

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First-principles method for impurities in quantum fluids: Positron in an electron gas. / Drummond, Neil; Lopez Rios, P.; Pickard, C. J. et al.
In: Physical review B, Vol. 82, 035107, 09.07.2010.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Drummond, N, Lopez Rios, P, Pickard, CJ & Needs, RJ 2010, 'First-principles method for impurities in quantum fluids: Positron in an electron gas', Physical review B, vol. 82, 035107. https://doi.org/10.1103/PhysRevB.82.035107

APA

Drummond, N., Lopez Rios, P., Pickard, C. J., & Needs, R. J. (2010). First-principles method for impurities in quantum fluids: Positron in an electron gas. Physical review B, 82, Article 035107. https://doi.org/10.1103/PhysRevB.82.035107

Vancouver

Drummond N, Lopez Rios P, Pickard CJ, Needs RJ. First-principles method for impurities in quantum fluids: Positron in an electron gas. Physical review B. 2010 Jul 9;82:035107. doi: 10.1103/PhysRevB.82.035107

Author

Drummond, Neil ; Lopez Rios, P. ; Pickard, C. J. et al. / First-principles method for impurities in quantum fluids: Positron in an electron gas. In: Physical review B. 2010 ; Vol. 82.

Bibtex

@article{bc746953369940e8b16bfc6ee59cb855,
title = "First-principles method for impurities in quantum fluids: Positron in an electron gas",
abstract = "We propose a first-principles methodology for calculating the behavior of isolated impurities immersed in quantum fluids. To obtain an accurate description of correlation effects between the impurity and the host, we work in the frame of reference in which the impurity is stationary, building on the work of C. H. Leung, M. J. Stott and C. O. Almbladh Phys. Lett. 57A 26 (1976). We apply our methodology to the case of a positron immersed in an electron gas. Our positron relaxation energies and annihilation rates are similar to those from the best existing many-body calculations. Our annihilating-pair momentum densities are significantly different from previous data and include a “tail” after the Fermi edge.",
author = "Neil Drummond and {Lopez Rios}, P. and Pickard, {C. J.} and Needs, {R. J.}",
note = "{\textcopyright} 2010 The American Physical Society",
year = "2010",
month = jul,
day = "9",
doi = "10.1103/PhysRevB.82.035107",
language = "English",
volume = "82",
journal = "Physical review B",
issn = "1550-235X",
publisher = "AMER PHYSICAL SOC",

}

RIS

TY - JOUR

T1 - First-principles method for impurities in quantum fluids: Positron in an electron gas

AU - Drummond, Neil

AU - Lopez Rios, P.

AU - Pickard, C. J.

AU - Needs, R. J.

N1 - © 2010 The American Physical Society

PY - 2010/7/9

Y1 - 2010/7/9

N2 - We propose a first-principles methodology for calculating the behavior of isolated impurities immersed in quantum fluids. To obtain an accurate description of correlation effects between the impurity and the host, we work in the frame of reference in which the impurity is stationary, building on the work of C. H. Leung, M. J. Stott and C. O. Almbladh Phys. Lett. 57A 26 (1976). We apply our methodology to the case of a positron immersed in an electron gas. Our positron relaxation energies and annihilation rates are similar to those from the best existing many-body calculations. Our annihilating-pair momentum densities are significantly different from previous data and include a “tail” after the Fermi edge.

AB - We propose a first-principles methodology for calculating the behavior of isolated impurities immersed in quantum fluids. To obtain an accurate description of correlation effects between the impurity and the host, we work in the frame of reference in which the impurity is stationary, building on the work of C. H. Leung, M. J. Stott and C. O. Almbladh Phys. Lett. 57A 26 (1976). We apply our methodology to the case of a positron immersed in an electron gas. Our positron relaxation energies and annihilation rates are similar to those from the best existing many-body calculations. Our annihilating-pair momentum densities are significantly different from previous data and include a “tail” after the Fermi edge.

U2 - 10.1103/PhysRevB.82.035107

DO - 10.1103/PhysRevB.82.035107

M3 - Journal article

VL - 82

JO - Physical review B

JF - Physical review B

SN - 1550-235X

M1 - 035107

ER -