Open AccessВлияние уровней Ландау на ССТС спектров ЭПР преципитатов Fe-=SUP=-3+-=/SUP=- в дираковском 3D-полуметалле Cd-=SUB=-3-=/SUB=-As-=SUB=-2-=/SUB=-
Author(s) -
Ю.В. Горюнов,
A. Nateprov
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.01.48738.577
Subject(s) - hyperfine structure , condensed matter physics , impurity , electron paramagnetic resonance , ion , landau quantization , magnetic field , conductivity , semimetal , doping , electrical resistivity and conductivity , atmospheric temperature range , chemistry , fermi level , physics , materials science , nuclear magnetic resonance , atomic physics , electron , band gap , organic chemistry , quantum mechanics , meteorology
The influence of d-metal impurities on the magnetic and transport properties of the 3D topological Cd3As2 semimetal is experimentally studied. It was found that when doping with iron, unlike Eu, there is no change in the sign of magneto resistance. There is an increase in the oscillations of the quantities (magnetic susceptibility, contact potential difference, and conductivity) associated with oscillations in the density of states at the Fermi level with temperature and magnetic field. In the temperature range of 10–300 K, EPR signals from Fe2+ ions were not detected, although, most likely, are the main type of Fe impurity in Cd3As2. From Fe3+ ions, weak EPR signals with a super-hyperfine structure (SHFS) were observed, which are obviously effected by Landau levels.