Spins in Si: P close to the metal-insulator transition

M. A. Paalanen; A. E. Ruckenstein; G. A. Thomas

doi:10.1103/PhysRevLett.54.1295

Spins in Si: P close to the metal-insulator transition

M. A. Paalanen, A. E. Ruckenstein, G. A. Thomas

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

Abstract

The spin-lattice relaxation time T1 of Si29 nuclei is measured near the metal-insulator transition as a function of temperature and magnetic field. The observed relaxation rate in the metal is up to 103 times larger than that for nuclei interacting with free, degenerate electrons. The enhanced relaxation rate and its magnetic field dependence suggest the existence of intrinsic, quasistatic spins with an ω-1 spectrum. These spins may cause strong spin-flip scattering and may therefore be responsible for the anomalous critical exponent of the electrical conductivity.

Original language	English (US)
Pages (from-to)	1295-1298
Number of pages	4
Journal	Physical Review Letters
Volume	54
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.54.1295
State	Published - 1985
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.54.1295

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title = "Spins in Si: P close to the metal-insulator transition",

abstract = "The spin-lattice relaxation time T1 of Si29 nuclei is measured near the metal-insulator transition as a function of temperature and magnetic field. The observed relaxation rate in the metal is up to 103 times larger than that for nuclei interacting with free, degenerate electrons. The enhanced relaxation rate and its magnetic field dependence suggest the existence of intrinsic, quasistatic spins with an ω-1 spectrum. These spins may cause strong spin-flip scattering and may therefore be responsible for the anomalous critical exponent of the electrical conductivity.",

author = "Paalanen, {M. A.} and Ruckenstein, {A. E.} and Thomas, {G. A.}",

year = "1985",

doi = "10.1103/PhysRevLett.54.1295",

language = "English (US)",

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journal = "Physical Review Letters",

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publisher = "American Physical Society",

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TY - JOUR

T1 - Spins in Si

T2 - P close to the metal-insulator transition

AU - Paalanen, M. A.

AU - Ruckenstein, A. E.

AU - Thomas, G. A.

PY - 1985

Y1 - 1985

N2 - The spin-lattice relaxation time T1 of Si29 nuclei is measured near the metal-insulator transition as a function of temperature and magnetic field. The observed relaxation rate in the metal is up to 103 times larger than that for nuclei interacting with free, degenerate electrons. The enhanced relaxation rate and its magnetic field dependence suggest the existence of intrinsic, quasistatic spins with an ω-1 spectrum. These spins may cause strong spin-flip scattering and may therefore be responsible for the anomalous critical exponent of the electrical conductivity.

AB - The spin-lattice relaxation time T1 of Si29 nuclei is measured near the metal-insulator transition as a function of temperature and magnetic field. The observed relaxation rate in the metal is up to 103 times larger than that for nuclei interacting with free, degenerate electrons. The enhanced relaxation rate and its magnetic field dependence suggest the existence of intrinsic, quasistatic spins with an ω-1 spectrum. These spins may cause strong spin-flip scattering and may therefore be responsible for the anomalous critical exponent of the electrical conductivity.

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DO - 10.1103/PhysRevLett.54.1295

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EP - 1298

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

ER -

Spins in Si: P close to the metal-insulator transition

Abstract

All Science Journal Classification (ASJC) codes

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