Low-temperature magnetothermoelectric power of aluminum

R. S. Averback; D. K. Wagner

doi:10.1016/0038-1098(72)90803-4

Low-temperature magnetothermoelectric power of aluminum

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Abstract

Measurements of the low-temperature magnetothermoelectric power of aluminum and a number of aluminum alloys show that the electron-diffusion component S_d increases and then saturates with increasing magnetic field. The difference ΔS_d between the high- and zero-field values of S_d is observed to be independent of the type of impurity in the aluminum and has the value (2.2±0.2)T×10^-8V/K. These observations are interpreted in terms of a realistic semiclassical analysis of the thermopower. This treatment gives an excellent account of the qualitative behavior of the thermopower in a magnetic field but yields a value of ΔS_d which is 30% lower than the observed value. Possible reasons for this descrepency are discussed.

Original language	English (US)
Pages (from-to)	1109-1113
Number of pages	5
Journal	Solid State Communications
Volume	11
Issue number	9
DOIs	https://doi.org/10.1016/0038-1098(72)90803-4
State	Published - Nov 1972
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(72)90803-4

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title = "Low-temperature magnetothermoelectric power of aluminum",

abstract = "Measurements of the low-temperature magnetothermoelectric power of aluminum and a number of aluminum alloys show that the electron-diffusion component Sd increases and then saturates with increasing magnetic field. The difference ΔSd between the high- and zero-field values of Sd is observed to be independent of the type of impurity in the aluminum and has the value (2.2±0.2)T×10-8V/K. These observations are interpreted in terms of a realistic semiclassical analysis of the thermopower. This treatment gives an excellent account of the qualitative behavior of the thermopower in a magnetic field but yields a value of ΔSd which is 30% lower than the observed value. Possible reasons for this descrepency are discussed.",

author = "Averback, {R. S.} and Wagner, {D. K.}",

note = "Funding Information: IN THIS letter we present measurements of the low-temperature magnetothermoelectric power MTEP of aluminum and dilute aluminum alloys, We observe that (1) the electron-diffusion component Sd of the MTEP saturates in a strong magnetic field; and (ii) the high-and zero-field values of the electron-diffusion component Sd depend rather sensitively on the impurities in the aluminum, but their difference does not. By *Work supported by the U.S. Atomic Energy Commission under Contracts AT(11-1)-1247 and AT(11-1)-3 150, Technical Report No. COO-3 150-3. Additional support was received from the Advanced Research Projects Agency through the Materials Science Center at Cornell University, Report No. 1752.",

year = "1972",

month = nov,

doi = "10.1016/0038-1098(72)90803-4",

language = "English (US)",

volume = "11",

pages = "1109--1113",

journal = "Solid State Communications",

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publisher = "Elsevier Limited",

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TY - JOUR

T1 - Low-temperature magnetothermoelectric power of aluminum

AU - Averback, R. S.

AU - Wagner, D. K.

N1 - Funding Information: IN THIS letter we present measurements of the low-temperature magnetothermoelectric power MTEP of aluminum and dilute aluminum alloys, We observe that (1) the electron-diffusion component Sd of the MTEP saturates in a strong magnetic field; and (ii) the high-and zero-field values of the electron-diffusion component Sd depend rather sensitively on the impurities in the aluminum, but their difference does not. By *Work supported by the U.S. Atomic Energy Commission under Contracts AT(11-1)-1247 and AT(11-1)-3 150, Technical Report No. COO-3 150-3. Additional support was received from the Advanced Research Projects Agency through the Materials Science Center at Cornell University, Report No. 1752.

PY - 1972/11

Y1 - 1972/11

N2 - Measurements of the low-temperature magnetothermoelectric power of aluminum and a number of aluminum alloys show that the electron-diffusion component Sd increases and then saturates with increasing magnetic field. The difference ΔSd between the high- and zero-field values of Sd is observed to be independent of the type of impurity in the aluminum and has the value (2.2±0.2)T×10-8V/K. These observations are interpreted in terms of a realistic semiclassical analysis of the thermopower. This treatment gives an excellent account of the qualitative behavior of the thermopower in a magnetic field but yields a value of ΔSd which is 30% lower than the observed value. Possible reasons for this descrepency are discussed.

AB - Measurements of the low-temperature magnetothermoelectric power of aluminum and a number of aluminum alloys show that the electron-diffusion component Sd increases and then saturates with increasing magnetic field. The difference ΔSd between the high- and zero-field values of Sd is observed to be independent of the type of impurity in the aluminum and has the value (2.2±0.2)T×10-8V/K. These observations are interpreted in terms of a realistic semiclassical analysis of the thermopower. This treatment gives an excellent account of the qualitative behavior of the thermopower in a magnetic field but yields a value of ΔSd which is 30% lower than the observed value. Possible reasons for this descrepency are discussed.

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JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

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Low-temperature magnetothermoelectric power of aluminum

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