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Thermal transport in graphene

by christopher.s
Tags: graphene, thermal, transport
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christopher.s
#1
Apr11-14, 10:59 AM
P: 17
Published values for the room temperature thermal conductivity of graphene vary from ~2000 W/m*k to 5600 W/m*k, for freely suspended samples. The large discrepancy shows the sensitivity of graphene to lattice defects (contact with substrate, edge defects, etc.)

Thermal conductivity increases as temperature decreases, until about 100K, where it drops due to increased umklapp scattering. Doped graphene, or graphene with vacancies, has been shown to have some unique properties, and this is where my interest lies.

At low temperature, thermal transport is dominated by the lattice, with very little electronic contribution (>10%) My question; what happens to the lattice when graphene is subjected to a magnetic field? Graphene with vacancies has shown some very interesting magnetic properties, and would undoubtedly be effected in a magnetic field.

Curious as to your thoughts on this.
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Greg Bernhardt
#2
May4-14, 10:46 PM
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I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
christopher.s
#3
May5-14, 11:25 AM
P: 17
From what I can gather it does seem like a magnetic field could potentially induce different kinds of defects, including Frenkel defects, in a graphene lattice. It stands to reason that this could drastically effect the thermal conductivity. Unfortunately there is not a lot of research on this specific topic. It does seem like an attractive area to explore...

If anybody has more thoughts on the subject, I would love to hear them


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