2011/08/11 by Torsten Karzig, Gil Refael, L. I. Glazman +2 · 1 citation
Physics and Astronomy · #Charge (physics) #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Fermi energy #Luttinger liquid #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.107.176403
published as Phys. Rev. Lett. 107, 176403 (2011) · 5 pages, 2 figures
arxiv created 2011/08/11 · openalex publication_date 2011/10/18 · arxiv updated 2012/06/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Tunneling of electrons of definite chirality into a quantum wire creates counterpropagating excitations, carrying both charge and energy. We find that the partitioning of energy is qualitatively different from that of charge. The partition ratio of energy depends on the excess energy of the tunneling electrons (controlled by the applied bias) and on the interaction strength within the wire (characterized by the Luttinger-liquid parameter κ), while the partitioning of charge is fully determined by κ. Moreover, unlike for charge currents, the partitioning of energy current should manifest itself in dc experiments on wires contacted by conventional (Fermi-liquid) leads.