Frictional drag between quantum wells mediated by phonon exchange

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Frictional drag between quantum wells mediated by phonon exchange. / Bønsager, Martin Chr; Flensberg, Karsten.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 57, No. 12, 01.01.1998, p. 7085-7102.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Bønsager, MC & Flensberg, K 1998, 'Frictional drag between quantum wells mediated by phonon exchange', Physical Review B - Condensed Matter and Materials Physics, vol. 57, no. 12, pp. 7085-7102. https://doi.org/10.1103/PhysRevB.57.7085

APA

Bønsager, M. C., & Flensberg, K. (1998). Frictional drag between quantum wells mediated by phonon exchange. Physical Review B - Condensed Matter and Materials Physics, 57(12), 7085-7102. https://doi.org/10.1103/PhysRevB.57.7085

Vancouver

Bønsager MC, Flensberg K. Frictional drag between quantum wells mediated by phonon exchange. Physical Review B - Condensed Matter and Materials Physics. 1998 Jan 1;57(12):7085-7102. https://doi.org/10.1103/PhysRevB.57.7085

Author

Bønsager, Martin Chr ; Flensberg, Karsten. / Frictional drag between quantum wells mediated by phonon exchange. In: Physical Review B - Condensed Matter and Materials Physics. 1998 ; Vol. 57, No. 12. pp. 7085-7102.

Bibtex

@article{fd1b22ffee654091a917d206ea5e8027,
title = "Frictional drag between quantum wells mediated by phonon exchange",
abstract = "We use the Kubo formalism to evaluate the contribution of acoustic-phonon exchange to the frictional drag between nearby two-dimensional electron systems. In the case of free phonons, we find a divergent drag rate (Formula presented) However, (Formula presented) becomes finite when phonon scattering from either lattice imperfections or electronic excitations is accounted for. In the case of GaAs quantum wells, we find that for a phonon mean free path (Formula presented) smaller than a critical value, imperfection scattering dominates and the drag rate varies as (Formula presented) over many orders of magnitude of the layer separation (Formula presented) When (Formula presented) exceeds the critical value, the drag rate is dominated by coupling through an electron-phonon collective mode localized in the vicinity of the electron layers. We argue that the coupled electron-phonon mode may be observable for realistic parameters. Our theory is in good agreement with experimental results for the temperature, density, and (Formula presented) dependence of the drag rate.",
author = "B{\o}nsager, {Martin Chr} and Karsten Flensberg",
year = "1998",
month = jan,
day = "1",
doi = "10.1103/PhysRevB.57.7085",
language = "English",
volume = "57",
pages = "7085--7102",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "12",

}

RIS

TY - JOUR

T1 - Frictional drag between quantum wells mediated by phonon exchange

AU - Bønsager, Martin Chr

AU - Flensberg, Karsten

PY - 1998/1/1

Y1 - 1998/1/1

N2 - We use the Kubo formalism to evaluate the contribution of acoustic-phonon exchange to the frictional drag between nearby two-dimensional electron systems. In the case of free phonons, we find a divergent drag rate (Formula presented) However, (Formula presented) becomes finite when phonon scattering from either lattice imperfections or electronic excitations is accounted for. In the case of GaAs quantum wells, we find that for a phonon mean free path (Formula presented) smaller than a critical value, imperfection scattering dominates and the drag rate varies as (Formula presented) over many orders of magnitude of the layer separation (Formula presented) When (Formula presented) exceeds the critical value, the drag rate is dominated by coupling through an electron-phonon collective mode localized in the vicinity of the electron layers. We argue that the coupled electron-phonon mode may be observable for realistic parameters. Our theory is in good agreement with experimental results for the temperature, density, and (Formula presented) dependence of the drag rate.

AB - We use the Kubo formalism to evaluate the contribution of acoustic-phonon exchange to the frictional drag between nearby two-dimensional electron systems. In the case of free phonons, we find a divergent drag rate (Formula presented) However, (Formula presented) becomes finite when phonon scattering from either lattice imperfections or electronic excitations is accounted for. In the case of GaAs quantum wells, we find that for a phonon mean free path (Formula presented) smaller than a critical value, imperfection scattering dominates and the drag rate varies as (Formula presented) over many orders of magnitude of the layer separation (Formula presented) When (Formula presented) exceeds the critical value, the drag rate is dominated by coupling through an electron-phonon collective mode localized in the vicinity of the electron layers. We argue that the coupled electron-phonon mode may be observable for realistic parameters. Our theory is in good agreement with experimental results for the temperature, density, and (Formula presented) dependence of the drag rate.

UR - http://www.scopus.com/inward/record.url?scp=0001029786&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.57.7085

DO - 10.1103/PhysRevB.57.7085

M3 - Journal article

AN - SCOPUS:0001029786

VL - 57

SP - 7085

EP - 7102

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 12

ER -

ID: 199597466