{
  "id": "1407.8284",
  "version": "v2",
  "published": "2014-07-31T05:44:11.000Z",
  "updated": "2015-05-27T07:54:02.000Z",
  "title": "Charge fluctuations in nonlinear heat transport",
  "authors": [
    "Niklas M. Gergs",
    "Christoph B. M. Hörig",
    "Maarten R. Wegewijs",
    "Dirk Schuricht"
  ],
  "journal": "Phys. Rev. B 91, 201107(R) (2015)",
  "doi": "10.1103/PhysRevB.91.201107",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "We show that charge fluctuation processes are crucial for the nonlinear heat conductance through an interacting nanostructure, even far from a resonance. We illustrate this for an Anderson quantum dot accounting for the first two leading orders of the tunneling in a master equation. The often made assumption that off-resonant transport proceeds entirely by virtual occupation of charge states, underlying exchange-scattering models, can fail dramatically for heat transport. The identified energy-transport resonances in the Coulomb blockade regime provide new qualitative information about relaxation processes, for instance by strong negative differential heat conductance relative to the heat current. These can go unnoticed in the charge current, making nonlinear heat-transport spectroscopy with energy-level control a promising experimental tool.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-07-31T05:44:11.000Z",
      "abstract": "We show that charge fluctuation processes are crucial for the nonlinear heat conductance through an interacting nanostructure, even far from a resonance. The often made assumption that off-resonant transport proceeds only by virtual occupation of charge states, underlying exchange-scattering models of transport, can fail dramatically for heat transport as compared to charge transport. This indicates that nonlinear heat transport spectroscopy may be a very promising experimental tool, in particular when combining energy-level control with recent advances in nanoscale thermometry that allow accurate measurements of heat currents. It provides new qualitative information about relaxation processes which can go unnoticed by the traditional charge-current measurements, for instance by strong negative differential heat conductance at positive heat current.",
      "comment": null,
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2015-05-27T07:54:02.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.Hk",
      "73.50.Lw",
      "73.63.-b"
    ],
    "keywords": [
      "heat current",
      "strong negative differential heat conductance",
      "nonlinear heat transport spectroscopy",
      "charge fluctuation processes",
      "nonlinear heat conductance"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2015,
      "month": "May",
      "volume": 91,
      "number": 20,
      "pages": 201107
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015PhRvB..91t1107G"
    }
  }
}