TY - JOUR
T1 - Electronic thermal transport measurement in low-dimensional materials with graphene non-local noise thermometry
AU - Waissman, Jonah
AU - Anderson, Laurel E.
AU - Talanov, Artem V.
AU - Yan, Zhongying
AU - Shin, Young J.
AU - Najafabadi, Danial H.
AU - Rezaee, Mehdi
AU - Feng, Xiaowen
AU - Nocera, Daniel G.
AU - Taniguchi, Takashi
AU - Watanabe, Kenji
AU - Skinner, Brian
AU - Matveev, Konstantin A.
AU - Kim, Philip
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2022/2
Y1 - 2022/2
N2 - In low-dimensional systems, the combination of reduced dimensionality, strong interactions and topology has led to a growing number of many-body quantum phenomena. Thermal transport, which is sensitive to all energy-carrying degrees of freedom, provides a discriminating probe of emergent excitations in quantum materials and devices. However, thermal transport measurements in low dimensions are dominated by the phonon contribution of the lattice, requiring an experimental approach to isolate the electronic thermal conductance. Here we measured non-local voltage fluctuations in a multi-terminal device to reveal the electronic heat transported across a mesoscopic bridge made of low-dimensional materials. Using two-dimensional graphene as a noise thermometer, we measured the quantitative electronic thermal conductance of graphene and carbon nanotubes up to 70 K, achieving a precision of ~1% of the thermal conductance quantum at 5 K. Employing linear and nonlinear thermal transport, we observed signatures of energy transport mediated by long-range interactions in one-dimensional electron systems, in agreement with a theoretical model.
AB - In low-dimensional systems, the combination of reduced dimensionality, strong interactions and topology has led to a growing number of many-body quantum phenomena. Thermal transport, which is sensitive to all energy-carrying degrees of freedom, provides a discriminating probe of emergent excitations in quantum materials and devices. However, thermal transport measurements in low dimensions are dominated by the phonon contribution of the lattice, requiring an experimental approach to isolate the electronic thermal conductance. Here we measured non-local voltage fluctuations in a multi-terminal device to reveal the electronic heat transported across a mesoscopic bridge made of low-dimensional materials. Using two-dimensional graphene as a noise thermometer, we measured the quantitative electronic thermal conductance of graphene and carbon nanotubes up to 70 K, achieving a precision of ~1% of the thermal conductance quantum at 5 K. Employing linear and nonlinear thermal transport, we observed signatures of energy transport mediated by long-range interactions in one-dimensional electron systems, in agreement with a theoretical model.
UR - http://www.scopus.com/inward/record.url?scp=85119000239&partnerID=8YFLogxK
U2 - 10.1038/s41565-021-01015-x
DO - 10.1038/s41565-021-01015-x
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C2 - 34782778
AN - SCOPUS:85119000239
SN - 1748-3387
VL - 17
SP - 166
EP - 173
JO - Nature Nanotechnology
JF - Nature Nanotechnology
IS - 2
ER -