Hall effect and transverse magnetoresistance in a low-dimensional conductor HfTe5

Large enhancement of the resistive anomaly in the pentatelluride materialsHfTe5andZrTe5Tritt1, Lowhorn2, Littleton3 et al. 1999Phys. Rev. B7211560View full textAdd to dashboardCite

“…Early Hall measurements concurred with the thermopower measurements as to the sign of the dominant carriers in the PHYSICAL REVIEW B 15 SEPTEMBER 1999-I VOLUME 60, NUMBER 11 PRB 60 0163-1829/99/60͑11͒/7816͑4͒/$15.00 7816 ©1999 The American Physical Society system, with very similar temperature dependence. 13 These measurements indicated a hole mobility of Ϸ2900 cm 2 /V s and a carrier concentration of 1.5ϫ10 18 cm Ϫ3 for HfTe 5 at 210 K. In this paper we report a large enhancement of the resistive peak with applied magnetic field, up to 9 Tesla, with a change in normalized resistivity, ͑9T͒/͑0͒, being approximately a factor of 3 in ZrTe 5 and a factor of 10 in HfTe 5 . These effects are anomalously large given that there is no magnetic character to this resistive transition.…”

“…This is very analogous to our previous studies of Ti doping in the HfTe 5 material. 13 This was an attempt to insert a smaller atom into the structure and create chemical pressure. These results could then be related to the results from the previous stress and pressure measurements.…”

HfTe5andZrTe5: Possible polaronic conductors

“…4, we reproduce the temperature dependence of the HfTe 5 Hall coefficient. The filled circles are data points from Izumi et al 7 The solid line is a fit to a phenomenological polaron theory, Eq. ͑6͒, below.…”

Enhanced thermopower and low thermal conductivity in p-type polycrystalline ZrTe5

“…Zhou et al reported the suppression of resistivity anomaly on application of pressure and emergence of superconductivity with the TC ~ 4 K at 14 GPa pressure 11 . The latest report by H. Xiong et al 13 has suggested 3D nature of band structure and estimated the gap of [18][19][20][21][22][23][24][25][26][27][28][29] meV between valence and conduction band by photoemission study 13 . It is suggested that the electronic transport anomaly in ZrTe5 is mediated by Lifshitz transition in the Dirac band, and strongly depends on the carrier concentration 12 .…”