Magnetically driven quantum heat engine.

@article{Muoz2014MagneticallyDQ,
  title={Magnetically driven quantum heat engine.},
  author={Enrique Mu{\~n}oz and Francisco Jos{\'e} Pe{\~n}a},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2014},
  volume={89 5},
  pages={
          052107
        }
}
  • E. Muñoz, F. Peña
  • Published 1 May 2014
  • Physics
  • Physical review. E, Statistical, nonlinear, and soft matter physics
We studied the efficiency of two different schemes for a magnetically driven quantum heat engine, by considering as the "working substance" a single nonrelativistic particle trapped in a cylindrical potential well, in the presence of an external magnetic field. The first scheme is a cycle, composed of two adiabatic and two isoenergetic reversible trajectories in configuration space. The trajectories are driven by a quasistatic modulation of the external magnetic-field intensity. The second… 

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References

SHOWING 1-10 OF 22 REFERENCES
Thermodynamics and an Introduction to Thermostatistics
GENERAL PRINCIPLES OF CLASSICAL THERMODYNAMICS. The Problem and the Postulates. The Conditions of Equilibrium. Some Formal Relationships, and Sample Systems. Reversible Processes and the Maximum Work
Mathematical Foundations of Quantum Mechanics
Mathematical Foundations of Quantum Mechanics was a revolutionary book that caused a sea change in theoretical physics. Here, John von Neumann, one of the leading mathematicians of the twentieth
“A and B”:
Direct fabrication of large micropatterned single crystals. p1205 21 Feb 2003. (news): Academy plucks best biophysicists from a sea of mediocrity. p994 14 Feb 2003.
Phys
  • Rev. B 71, 165301
  • 2005
Proc
  • R. Soc. Lond. A 458, 1519
  • 2002
Science 299
  • 862
  • 2003
Phys
  • Rev. E 86, 061108
  • 2012
Proc
  • Natl. Acad. Sci. USA 108, 15097
  • 2011
Phys
  • Rev. Lett. 112, 030602
  • 2014
and A
  • Wójs, Quantum Dots
  • 1998
...
...