Physical Transformation AtlasPTA
Phenomenon · phenomenon:phonon-drag

Phonon drag

A heat current of phonons sweeps charge carriers along with it, adding a large low-temperature contribution to the thermopower of semiconductors.

Condensed matterfirst reported 1954

Atlas record: 3 claims reference this phenomenon — 3 established.

Explorerelations · matrix context · routes · sources · cite

conditions: solid · semiconductor required · cryogenic
3claims8enumerated routes0routes with complete-composition evidence6candidate routes not searched3cited sources

Relations

drives · 1
Phonons—drives→Phonon dragestablished
  • a phonon heat current in a semiconductor at low temperature
Phonon drag is a component of the same conductor's Seebeck coefficient, not a second converter in series with it: Yalamarthy et al. 2019 attribute up to 32 % (300 K) and 88 % (50 K) of the Seebeck coefficient of a thick AlGaN/GaN 2DEG to drag. The compiler therefore treats the heat-conduction → phonon-drag spelling as representation-equivalent to the thermoelectric generator.
produces · 1
Phonon drag—produces→Charge carriersestablished
member of · 1
Phonon drag—member of→Thermoelectricestablished

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

Enumerated routes through this · 8

Cited sources · 3

  1. [1]
    C. Herring. Theory of the thermoelectric power of semiconductors (1954)
    Physical Review 96, 1163 · doi:10.1103/PhysRev.96.1163 · crossref ✓ 2026-09-19 · record
  2. [2]
    H. J. Goldsmid. Introduction to Thermoelectricity (2nd ed.) (2016)
    Springer Series in Materials Science 121 · doi:10.1007/978-3-662-49256-7 · crossref ✓ 2026-09-19 · record
  3. [3]
    A. S. Yalamarthy et al.. Significant Phonon Drag Enables High Power Factor in the AlGaN/GaN Two-Dimensional Electron Gas (2019)
    Nano Letters 19, 3770–3776 · doi:10.1021/acs.nanolett.9b00901 · record

Cite this entity

Physical Transformation Atlas (2026). entity phenomenon:phonon-drag: Phonon drag. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/phenomenon/phonon-drag

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