Temperature distribution in a large Bi2Sr2CaCu2O8+δ mesa
Journal article, 2011

Joule heating in large Bi2Sr2CaCu2O8+delta mesas was numerically analyzed while taking into account typical thermal conductivities and their temperature dependences of all the materials involved in heat dissipation and removal. Such mesas are used in experiments on THz-range radiation. The analysis shows that the temperature increases with bias current and is distributed unevenly along the mesas. The temperature of the mesa's middle part can even exceed T-c at sufficiently high bias. The overall current-voltage characteristics are also calculated self-consistently, showing a negative differential conductance in a wide range of currents.

intrinsic josephson-junctions

thz radiation

arrays

resistance

thermal-conductivity

spectroscopy

transport

emission

single-crystals

superconductors

Author

Avgust Yurgens

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Physical Review B - Condensed Matter and Materials Physics

24699950 (ISSN) 24699969 (eISSN)

Vol. 83 18

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevB.83.184501

More information

Created

10/7/2017