Abstract
Within the t-J model, the heat transport of the doped two-leg ladder material Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41} is studied in the doped regime where superconductivity appears under pressure in low temperatures. The energy dependence of the thermal conductivity {kappa}c({omega}) shows a low-energy peak, while the temperature dependence of the thermal conductivity {kappa}c(T) is characterized by a broad band. In particular, {kappa}c(T) increases monotonously with increasing temperature at low temperatures T0.05J, and is weakly temperature-dependent in the temperature range 0.05JT0.1J, then decreases for temperatures T>0.1J, in qualitative agreement with experiments. Our result also shows that although both dressed holons and spinons are responsible for the thermal conductivity, the contribution from the dressed spinons dominates the heat transport of Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}.
Jihong, Qin;
[1]
Shiping, Feng;
[1]
Feng, Yuan;
[2]
Weiyeu, Chen
[3]
- Department of Physics, Beijing Normal University, Beijing 100875 (China)
- Texas Center for Superconductivity, University of Houston, Houston, TX 77204 (United States)
- Department of Physics, Tamkang University, Tamsui 25137, Taiwan (China)
Citation Formats
Jihong, Qin, Shiping, Feng, Feng, Yuan, and Weiyeu, Chen.
Thermal conductivity in the doped two-leg ladder antiferromagnet Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}.
Netherlands: N. p.,
2005.
Web.
doi:10.1016/j.physleta.2004.12.051.
Jihong, Qin, Shiping, Feng, Feng, Yuan, & Weiyeu, Chen.
Thermal conductivity in the doped two-leg ladder antiferromagnet Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}.
Netherlands.
https://doi.org/10.1016/j.physleta.2004.12.051
Jihong, Qin, Shiping, Feng, Feng, Yuan, and Weiyeu, Chen.
2005.
"Thermal conductivity in the doped two-leg ladder antiferromagnet Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}."
Netherlands.
https://doi.org/10.1016/j.physleta.2004.12.051.
@misc{etde_20616704,
title = {Thermal conductivity in the doped two-leg ladder antiferromagnet Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}}
author = {Jihong, Qin, Shiping, Feng, Feng, Yuan, and Weiyeu, Chen}
abstractNote = {Within the t-J model, the heat transport of the doped two-leg ladder material Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41} is studied in the doped regime where superconductivity appears under pressure in low temperatures. The energy dependence of the thermal conductivity {kappa}c({omega}) shows a low-energy peak, while the temperature dependence of the thermal conductivity {kappa}c(T) is characterized by a broad band. In particular, {kappa}c(T) increases monotonously with increasing temperature at low temperatures T0.05J, and is weakly temperature-dependent in the temperature range 0.05JT0.1J, then decreases for temperatures T>0.1J, in qualitative agreement with experiments. Our result also shows that although both dressed holons and spinons are responsible for the thermal conductivity, the contribution from the dressed spinons dominates the heat transport of Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}.}
doi = {10.1016/j.physleta.2004.12.051}
journal = []
issue = {5-6}
volume = {335}
journal type = {AC}
place = {Netherlands}
year = {2005}
month = {Feb}
}
title = {Thermal conductivity in the doped two-leg ladder antiferromagnet Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}}
author = {Jihong, Qin, Shiping, Feng, Feng, Yuan, and Weiyeu, Chen}
abstractNote = {Within the t-J model, the heat transport of the doped two-leg ladder material Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41} is studied in the doped regime where superconductivity appears under pressure in low temperatures. The energy dependence of the thermal conductivity {kappa}c({omega}) shows a low-energy peak, while the temperature dependence of the thermal conductivity {kappa}c(T) is characterized by a broad band. In particular, {kappa}c(T) increases monotonously with increasing temperature at low temperatures T0.05J, and is weakly temperature-dependent in the temperature range 0.05JT0.1J, then decreases for temperatures T>0.1J, in qualitative agreement with experiments. Our result also shows that although both dressed holons and spinons are responsible for the thermal conductivity, the contribution from the dressed spinons dominates the heat transport of Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41}.}
doi = {10.1016/j.physleta.2004.12.051}
journal = []
issue = {5-6}
volume = {335}
journal type = {AC}
place = {Netherlands}
year = {2005}
month = {Feb}
}