Transport Properties of the High Temperature Phase of Fe3O4

1995 ◽  
Vol 64 (6) ◽  
pp. 2118-2126 ◽  
Author(s):  
Sakae Todo ◽  
Kiiti Siratori ◽  
Shigeyuki Kimura
Keyword(s):  
High Temperature ◽  
Transport Properties ◽  
High Temperature Phase ◽  
Temperature Phase

Preparation and transport properties of AgSbTe2 by high-pressure and high-temperature

2008 ◽  
Vol 454 (1-2) ◽  
pp. 415-418 ◽  
Author(s):  
Hongan Ma ◽  
Taichao Su ◽  
Pinwen Zhu ◽  
Jiangang Guo ◽  
Xiaopeng Jia
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Transport Properties

Thermoelectric Properties of Semiconducting Intermetallic Compounds: FeGa3and RuGa3

2003 ◽  
Vol 793 ◽  
Author(s):  
Y. Amagai ◽  
A. Yamamoto ◽  
C. H. Lee ◽  
H. Takazawa ◽  
T. Noguchi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Seebeck Coefficient ◽  
Transport Properties ◽  
Figure Of Merit ◽  
Room Temperature ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
High Seebeck Coefficient

ABSTRACTWe report transport properties of polycrystalline TMGa3(TM = Fe and Ru) compounds in the temperature range 313K<T<973K. These compounds exhibit semiconductorlike behavior with relatively high Seebeck coefficient, electrical resistivity, and Hall carrier concentrations at room temperature in the range of 1017- 1018cm−3. Seebeck coefficient measurements reveal that FeGa3isn-type material, while the Seebeck coefficient of RuGa3changes signs rapidly from large positive values to large negative values around 450K. The thermal conductivity of these compounds is estimated to be 3.5Wm−1K−1at room temperature and decreased to 2.5Wm−1K−1for FeGa3and 2.0Wm−1K−1for RuGa3at high temperature. The resulting thermoelectric figure of merit,ZT, at 945K for RuGa3reaches 0.18.

Quantum oscillations and the Fermi surface of high-temperature cuprate superconductors

2011 ◽  
Vol 12 (5-6) ◽  
pp. 446-460 ◽  
Author(s):  
Baptiste Vignolle ◽  
David Vignolles ◽  
David LeBoeuf ◽  
Stéphane Lepault ◽  
Brad Ramshaw ◽  
...  
Keyword(s):  
High Temperature ◽  
Fermi Surface ◽  
Cuprate Superconductors ◽  
Quantum Oscillations

scholarly journals SPECTRAL ANOMALY AND HIGH TEMPERATURE SUPERCONDUCTORS

1996 ◽  
Vol 10 (07) ◽  
pp. 805-845 ◽  
Author(s):  
LAN YIN ◽  
SUDIP CHAKRAVARTY
Keyword(s):  
High Temperature ◽  
Spectral Function ◽  
Superconducting State ◽  
Fermi Liquid ◽  
Cuprate Superconductors ◽  
High Temperature Superconductors ◽  
Universality Class ◽  
Scaling Relation ◽  
Critical System ◽  
Spectral Anomaly

Spectral anomaly for interacting fermions is characterized by the spectral function A ([k − k F ], ω) satisfying the scaling relation A (Λy1 [k − k F ], Λy2 ω) =ΛyA A ([k − k F ], ω), where y1, y2, and yA are the exponents defining the universality class. For a Fermi liquid y1 = 1, y2 = 1, yA = −1; all other values of the exponents are termed anomalous. In this paper, an example for which y1 = 1, y2 = 1, but yA = α − 1 is considered in detail. Attractive interaction added to such a critical system leads to a novel superconducting state, which is explored and its relevance to high temperature cuprate superconductors is discussed.

Sign in / Sign up

Export Citation Format

Share Document