TY - JOUR
T1 - Unconventional drop in the electrical resistance of chromium metal thin films at low temperature
AU - Ohashi, M.
AU - Ohashi, K.
AU - Sawabu, M.
AU - Miyagawa, M.
AU - Kubota, T.
AU - Takanashi, K.
N1 - Funding Information:
This work was performed under the inter-university cooperative research program (Proposal No. 15G0039) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University. This work was supported in part by Grants-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (KAKENHI Grant Number JP25400363), JFE 21st century Foundation, and JGC-S Scholarship Foundation.
Funding Information:
This work was performed under the inter-university cooperative research program (Proposal No. 15G0039 ) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University . This work was supported in part by Grants-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (KAKENHI Grant Number JP25400363 ), JFE 21st century Foundation , and JGC-S Scholarship Foundation .
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/9/7
Y1 - 2016/9/7
N2 - We studied the electrical resistance of single-crystal and polycrystalline chromium films. The ρ(T) curve of single-crystal films decrease with decreasing temperature and show humps at around 300 K consistent with the bulk chromium being an itinerant antiferromagnet. In the polycrystalline films, on the other hand, the ρ(T) curves deviate from those of the bulk chromium. Moreover, we observed sudden decrease in the resistance around 1.5 K. Although previous studies suggested that chromium films become superconductive (Schmidt et al. (1972) [12]), it is difficult to conclude whether a superconducting transition occurs because the electrical resistivity is not zero in all films. No anomaly was detected by resistance measurements around room temperature, and the sudden decrease in the resistance at low temperature may be attributed to the suppression of antiferromagnetic interaction by thinning down the chromium element.
AB - We studied the electrical resistance of single-crystal and polycrystalline chromium films. The ρ(T) curve of single-crystal films decrease with decreasing temperature and show humps at around 300 K consistent with the bulk chromium being an itinerant antiferromagnet. In the polycrystalline films, on the other hand, the ρ(T) curves deviate from those of the bulk chromium. Moreover, we observed sudden decrease in the resistance around 1.5 K. Although previous studies suggested that chromium films become superconductive (Schmidt et al. (1972) [12]), it is difficult to conclude whether a superconducting transition occurs because the electrical resistivity is not zero in all films. No anomaly was detected by resistance measurements around room temperature, and the sudden decrease in the resistance at low temperature may be attributed to the suppression of antiferromagnetic interaction by thinning down the chromium element.
KW - Cr film
KW - Electrical resistivity
KW - Sheet resistance
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=84979287786&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84979287786&partnerID=8YFLogxK
U2 - 10.1016/j.physleta.2016.07.031
DO - 10.1016/j.physleta.2016.07.031
M3 - Article
AN - SCOPUS:84979287786
VL - 380
SP - 3133
EP - 3137
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
SN - 0375-9601
IS - 38
ER -