Crossover from Kondo to Fermi-liquid behavior induced by high magnetic field in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mn>1</mml:mn><mml:mi>T</mml:mi><mml:mo>−</mml:mo><mml:mi mathvariant="normal">V</mml:mi><mml:msub><mml:mrow><mml:mi>Te</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math> single crystals
X. X. Ding, Jie Xing, Gang Li, Luis Balicas, Krzysztof Gofryk, Hai‐Hu Wen
Abstract
The magnetic and magnetotransport properties of metallic $1T\text{\ensuremath{-}}{\mathrm{VTe}}_{2}$ single crystals were investigated at temperatures from 1.3 to 300 K and in magnetic fields up to 35 T. Upon applying a high magnetic field, it is found that the electrical resistivity displays a crossover from the logarithmic divergence of the single-impurity Kondo effect to the Fermi liquid behavior at low temperatures. The Brillouin scale of the negative magnetoresistivity above the Kondo temperature ${T}_{\mathrm{K}}$ = 12 K indicates that the Kondo features originate from intercalated V ions, with $S$ = 1/2. Both magnetic susceptibility and Hall effect show an anomaly around ${T}_{\mathrm{K}}$. By using the modified Hamann expression we successfully describe the temperature-dependent resistivity under various magnetic fields, which shows the characteristic peak below ${T}_{\mathrm{K}}$ due to the splitting of the Kondo resonance.