Pressure dependence of the resistivity and magnetoresistance in single-crystal Nd0.62Pb0.30MnO3-δ

Journal of Physics Condensed Matter

Volumn 8, Issue 41, 1996, Pages 7723-7731

  Khazeni, K ^a   Jia, Y X ^a   Crespi, Vincent H ^a   Lu, L ^a   Zettl, A ^a   Cohen, Marvin L ^a  

^a NONE

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRIC CONDUCTIVITY MEASUREMENT; HIGH TEMPERATURE SUPERCONDUCTORS; HYDROSTATIC PRESSURE; MAGNETIC FIELD EFFECTS; MAGNETIC VARIABLES MEASUREMENT; MAGNETORESISTANCE; PRESSURE EFFECTS; SINGLE CRYSTALS; SUPERCONDUCTING TRANSITION TEMPERATURE; SURFACES; THERMAL EXPANSION;

MAGNETORESISTANCE MEASUREMENT; METAL INSULATOR TRANSITION; PRESSURE SENSITIVITY;

NEODYMIUM COMPOUNDS;

EID: 0030573874     PISSN: 09538984     EISSN: None     Source Type: Journal    
DOI: 10.1088/0953-8984/8/41/017     Document Type: Article

References (43)

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32. We are wary of drawing strong conclusions regarding the pressure sensitivity of the pre-factor since its evaluation requires a lengthy extrapolation to infinite temperature. A qualitative reduction in ρ0 under pressure is clear.
33. Additional uncertainty enters this estimate because the flattening of the temperature dependence of the lattice constant at low temperatures has not yet been measured.
34. This discussion is insensitive to the exact form taken for the conduction processes in the high- and low-temperature phases, so long as the general metallic and semiconductive behaviours are maintained.
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40. Xiong G C, Li Q, Ju H L, Mao S N, Senapati L, Xi X X, Greene R L and Venlatesan T 1995 Appl. Phys. Lett. 66 1427, figure 1 Millis A J, Littlewood P B and Shraiman B I 1995 Phys. Rev. Lett. 74 5144, inset of figure 1 (data from Y Tokura, A Urushibara, Y Morimoto, T Arima, A Asamitsu, G Kido, and N Furukawa) Hwang H Y, Cheong S-W, Radaelli P G, Marezio N and Batlogg B 1995 Phys. Rev. Lett. 75 914, y = 0.35 sample under field in figure 1 Jia Y X, Crespi V H, Lu L, Khazeni K and Zettl A 1995 unpublished Hundley M F 1995 personal communication.
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42. Xiong G C, Li Q, Ju H L, Mao S N, Senapati L, Xi X X, Greene R L and Venlatesan T 1995 Appl. Phys. Lett. 66 1427, figure 1 Millis A J, Littlewood P B and Shraiman B I 1995 Phys. Rev. Lett. 74 5144, inset of figure 1 (data from Y Tokura, A Urushibara, Y Morimoto, T Arima, A Asamitsu, G Kido, and N Furukawa) Hwang H Y, Cheong S-W, Radaelli P G, Marezio N and Batlogg B 1995 Phys. Rev. Lett. 75 914, y = 0.35 sample under field in figure 1 Jia Y X, Crespi V H, Lu L, Khazeni K and Zettl A 1995 unpublished Hundley M F 1995 personal communication.
43. We borrow the term 'bad metal' from S A Kivelson. It refers to a system which violates the Ioffe-Regel limit and yet shows a metallic temperature dependence of the resistivity. Covert hopping refers to a situation in which the temperature exceeds the activation energy.