Polarity reversal of the charge carrier in tetragonal TiH_{x}(x=1.6−2.0) at low temperatures by Ryota Shimizu, Yuki Sasahara, Ikutaro Hamada, Hiroyuki Oguchi, Shohei Ogura, Tetsuroh Shirasawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Shin-ichi Orimo, Katsuyuki Fukutani, Taro Hitosugi

“…We found that the Hall coefficient of TiH_{x} strongly depends on hydrogen content and unit-cell volume: Nearly stoichiometric TiH_{x}(x≈2.0) films with large unit-cell volumes showed positive Hall coefficients at 4 K, whereas TiH_{x} samples with x<∼1.7 and small unit-cell volumes showed negative Hall coefficients at 4 K. …”
Get full text