TY - JOUR
T1 - Anomalous magnetoresistance behavior of an insulating zirconium oxynitride CernoxTM thermometer
AU - Rosenbaum, R.
AU - Brandt, B.
AU - Hannahs, S.
AU - Murphy, T.
AU - Palm, E.
AU - Pullum, B. J.
N1 - Funding Information:
A portion of this work was performed at the NHMFL, which is supported by the NSF Cooperative Agreement No. DMR- 9527035, by the State of Florida and by the Tel Aviv University Internal Research Fund.
PY - 2001/1
Y1 - 2001/1
N2 - Zirconium oxynitride insulating films make excellent thermometry at 4 K and above. The resistance is almost independent of magnetic fields up to 30 T and exhibits good temperature sensitivity and good reproducibility upon temperature cycling. However below 4 K, this material exhibits an anomalous negative magnetoresistance (MR); for example at 86 mK, the resistance decreases by a factor of 24 in a 17 T field as compared to its zero-field value. The negative magnetoresistnce behavior is explained using a model proposed by Movaghar, Schweitzer and Osaka. Fits to the negative MR data are good above 0.3 K but become poorer at lower temperatures.
AB - Zirconium oxynitride insulating films make excellent thermometry at 4 K and above. The resistance is almost independent of magnetic fields up to 30 T and exhibits good temperature sensitivity and good reproducibility upon temperature cycling. However below 4 K, this material exhibits an anomalous negative magnetoresistance (MR); for example at 86 mK, the resistance decreases by a factor of 24 in a 17 T field as compared to its zero-field value. The negative magnetoresistnce behavior is explained using a model proposed by Movaghar, Schweitzer and Osaka. Fits to the negative MR data are good above 0.3 K but become poorer at lower temperatures.
UR - http://www.scopus.com/inward/record.url?scp=0035059565&partnerID=8YFLogxK
U2 - 10.1016/S0921-4526(00)00707-9
DO - 10.1016/S0921-4526(00)00707-9
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AN - SCOPUS:0035059565
SN - 0921-4526
VL - 294-295
SP - 489
EP - 491
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
ER -