---
res:
  bibo_abstract:
  - Conductive ferroelectric domain walls (DWs) represent a promising topical system
    for the development of nanoelectronic components and device sensors to be operational
    at elevated temperatures. DWs show very different properties as compared to their
    hosting bulk crystal, in particular with respect to the high local electrical
    conductivity. The objective of this work is to demonstrate DW conductivity up
    to temperatures as high as 400 °C which extends previous studies significantly.
    Experimental investigation of the DW conductivity of charged, inclined DWs is
    performed using 5 mol % MgO-doped lithium niobate single crystals. Current–voltage
    (  ) curves are determined by DC electrometer measurements and impedance spectroscopy
    and found to be identical. Moreover, impedance spectroscopy enables to recognize
    artifacts such as damaged electrodes. Temperature dependent measurements over
    repeated heating cycles reveal two distinct thermal activation energies for a
    given DW, with the higher of the activation energies only measured at higher temperatures.
    Depending on the specific sample, the higher activation energy is found above
    160 °C to 230 °C. This suggests, in turn, that more than one type of defect/polaron
    is involved, and that the dominant transport mechanism changes with increasing
    temperature. First principles atomistic modeling suggests that the conductivity
    of inclined domain walls cannot be solely explained by the formation of a 2D carrier
    gas and must be supported by hopping processes. This holds true even at temperatures
    as high as 400 °C. Our investigations underline the potential to extend DW current
    based nanoelectronic and sensor applications even into the so-far unexplored temperature
    range up to 400 °C.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Hendrik
      foaf_name: Wulfmeier, Hendrik
      foaf_surname: Wulfmeier
  - foaf_Person:
      foaf_givenName: Uliana
      foaf_name: Yakhnevych, Uliana
      foaf_surname: Yakhnevych
  - foaf_Person:
      foaf_givenName: Cornelius
      foaf_name: Boekhoff, Cornelius
      foaf_surname: Boekhoff
  - foaf_Person:
      foaf_givenName: Allan
      foaf_name: Diima, Allan
      foaf_surname: Diima
  - foaf_Person:
      foaf_givenName: Marlo
      foaf_name: Kunzner, Marlo
      foaf_surname: Kunzner
  - foaf_Person:
      foaf_givenName: Leonard M.
      foaf_name: Verhoff, Leonard M.
      foaf_surname: Verhoff
  - foaf_Person:
      foaf_givenName: Jonas
      foaf_name: Paul, Jonas
      foaf_surname: Paul
  - foaf_Person:
      foaf_givenName: Julius
      foaf_name: Ratzenberger, Julius
      foaf_surname: Ratzenberger
  - foaf_Person:
      foaf_givenName: Elke
      foaf_name: Beyreuther, Elke
      foaf_surname: Beyreuther
  - foaf_Person:
      foaf_givenName: Joshua
      foaf_name: Gössel, Joshua
      foaf_surname: Gössel
  - foaf_Person:
      foaf_givenName: Iuliia
      foaf_name: Kiseleva, Iuliia
      foaf_surname: Kiseleva
  - foaf_Person:
      foaf_givenName: Michael
      foaf_name: Rüsing, Michael
      foaf_surname: Rüsing
      foaf_workInfoHomepage: http://www.librecat.org/personId=22501
    orcid: 0000-0003-4682-4577
  - foaf_Person:
      foaf_givenName: Simone
      foaf_name: Sanna, Simone
      foaf_surname: Sanna
  - foaf_Person:
      foaf_givenName: Lukas M.
      foaf_name: Eng, Lukas M.
      foaf_surname: Eng
  - foaf_Person:
      foaf_givenName: Holger
      foaf_name: Fritze, Holger
      foaf_surname: Fritze
  bibo_doi: 10.1016/j.ssi.2025.116949
  bibo_volume: 429
  dct_date: 2025^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0167-2738
  dct_language: eng
  dct_publisher: Elsevier BV@
  dct_title: Demonstration of domain wall current in MgO-doped lithium niobate single
    crystals up to 400°C@
...