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Charge Transport in Solid 4He

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Abstract

With the help of a new experimental technique strong anisotropy of the mobility of ions has been observed in hcp 4 He crystals. The mobility of positive ions in the direction of the six-fold axis is found to be 200 times higher than in the perpendicular direction. Activation energies of the mobility have been measured in both principal directions. They are equal to: 5.3K in the direction of the C6-axis and 11K in the perpendicular direction. The behaviour of the ions' velocity in the strong electric field regime is also studied as a function of the orientation.

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Andreeva, O., Keshishev, K., Kholin, D. et al. Charge Transport in Solid 4He. Journal of Low Temperature Physics 110, 89–96 (1998). https://doi.org/10.1023/A:1022514801281

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  • DOI: https://doi.org/10.1023/A:1022514801281

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