Research output: Contribution to Journal/Magazine › Journal article
Research output: Contribution to Journal/Magazine › Journal article
}
TY - JOUR
T1 - Nanoelectronic thermometers optimised for sub-10 millikelvin operation
AU - Prance, J. R.
AU - Bradley, D. I.
AU - George, R. E.
AU - Haley, R. P.
AU - Pashkin, Yu A.
AU - Sarsby, M.
AU - Penttilä, J.
AU - Roschier, L.
AU - Gunnarsson, D.
AU - Heikkinen, H.
AU - Prunnila, M.
N1 - 11 pages, 4 figures. (Fixed fitted saturation T_e on p9)
PY - 2015/6/10
Y1 - 2015/6/10
N2 - We report the cooling of electrons in nanoelectronic Coulomb blockade thermometers below 4 mK. Above 7 mK the devices are in good thermal contact with the environment, well isolated from electrical noise, and not susceptible to self-heating. This is attributed to an optimised design that incorporates cooling fins with a high electron-phonon coupling and on-chip electronic filters, combined with a low-noise electronic measurement setup. Below 7 mK the electron temperature is seen to diverge from the ambient temperature. By immersing a Coulomb Blockade Thermometer in the 3He/4He refrigerant of a dilution refrigerator, we measure a lowest electron temperature of 3.7 mK.
AB - We report the cooling of electrons in nanoelectronic Coulomb blockade thermometers below 4 mK. Above 7 mK the devices are in good thermal contact with the environment, well isolated from electrical noise, and not susceptible to self-heating. This is attributed to an optimised design that incorporates cooling fins with a high electron-phonon coupling and on-chip electronic filters, combined with a low-noise electronic measurement setup. Below 7 mK the electron temperature is seen to diverge from the ambient temperature. By immersing a Coulomb Blockade Thermometer in the 3He/4He refrigerant of a dilution refrigerator, we measure a lowest electron temperature of 3.7 mK.
KW - cond-mat.mes-hall
M3 - Journal article
JO - arxiv.org
JF - arxiv.org
ER -