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Strongly enhanced hole-phonon coupling in the metallic state of the dilute two-dimensional hole gas


, : Strongly enhanced hole-phonon coupling in the metallic state of the dilute two-dimensional hole gas. Physical Review Letters 94(8): 086402-086402

We have studied the temperature dependent phonon emission rate P(T) of a strongly interacting (r(s) > or =22) dilute 2D GaAs hole system using a standard carrier heating technique. In the still poorly understood metallic state, we observe that P(T) changes from P(T) approximately T5 to P(T) approximately T7 above 100 mK, indicating a crossover from screened piezoelectric (PZ) coupling to screened deformation potential (DP) coupling for hole-phonon scattering. Quantitative comparison with theory shows that the long range PZ coupling between holes and phonons has the expected magnitude; however, in the metallic state, the short range DP coupling between holes and phonons is almost 20 times stronger than expected from theory. The density dependence of P(T) shows that it is easier to cool low-density 2D holes in GaAs than higher density 2D hole systems.

US$19.90

PMID: 15783911

DOI: 10.1103/PhysRevLett.94.086402


Other references

Jain, P.C., 1965: Studies on the structure, development, innervation and phylogeny of the heart and its conducting tissue in bat, pigeon and rabbit. Agra University Journal of Research, 14: 207-213

Benson, R.B., 1940: A new British leaf-rolling sawfly of the genus Pontania Costa on Salix pentandra L Hym, Symphyta. Entomologist's Monthly Magazine, 76: 209-212

Williams, S.; Smith, S., 1987: Redstart as a nestbox breeder at Lasgarn Wood. Gwent Bird Report, 19 No. 22

Murray, G.I.; Shaw, D.; Weaver, R.J.; McKay, J.A.; Ewen, S.W.; Melvin, W.T.; Burke, M.D., 1994: Cytochrome P450 expression in oesophageal cancer. The cytochrome P450 superfamily of enzymes play a central part in the metabolism of carcinogens and anti-cancer drugs. The expression, cellular localisation, and distribution of different forms of P450 and the functionally associated enzymes epoxi...

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Tarizzo, M.L., 1957: Saudi Arabia; epidemiological notes on the Eastern Province. These data were gathered over a period of 5 years from the out-patient and medical services of the Arabian American Oil Company. The main factors determining the health conditions of the Eastern Province of Saudi Arabia are the subtropical desert...

Chu Y I.; Hong S C.; Lai T W.; Chen Y S., 1986: Studies on egg overwintering of the brown planthopper nilaparvata lugens in northern taiwan. The overwinter of brown planthopper (Nilaparvata lugens) with its egg stage are studied under the outdoor conditions with the materials collecting from the fields. The eggs deposited in the period between the end of Nov. 1983 and the end of Feb. 1...

Dikmans, G., 1935: A Note on the Identity of Cooperia punctata Ransom, 1907, and C. fieldingi Baylis, 1928 (Nematoda: Trichostrongylidae). Dikmans has made an examination of a number of specimens of C. punctata from cattle in Puerto Rico and found the spicules to be of very variable length, ranging almost up to the length of those described by BAYLIS for C. fieldingi. The morphology...