Temperature effect on the magnetic oscillations in 2D materials.
F Escudero1,2, J S Ardenghi1,2, P Jasen1,2
1Departamento de Física, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Argentina.
Summary
Magnetic oscillations in 2D materials exhibit unique sawtooth patterns dependent on electric fields and Fermi energy. Temperature influences spin and valley properties, revealing distinct behaviors at different temperature ranges.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Two-dimensional (2D) materials with buckled honeycomb lattices are platforms for novel electronic phenomena.
- Magnetic oscillations (MO) are sensitive probes of electronic band structures.
Purpose of the Study:
- Investigate magnetic oscillations in 2D materials under electric and magnetic fields.
- Analyze the temperature dependence of MO and its relation to spin and valley properties.
Main Methods:
- Theoretical study of MO in a buckled honeycomb lattice.
- Analysis of temperature effects using Fermi-Dirac-like functions.
- Examination of spin splitting and valley mixing conditions.
Main Results:
- At zero temperature, MO show four sawtooth oscillations with two frequencies and phases.
- Frequencies are tunable by Fermi energy and electric field, leading to beating phenomena.
- Temperature effects reveal minimum temperatures for observing spin and valley properties.
- Spin splitting requires MO phase difference to be greater than function width; valley mixing requires MO period to be greater.
Conclusions:
- The interplay of spin and valley degrees of freedom dictates unique MO features in 2D materials.
- Temperature critically influences the observation of spin and valley effects in MO.
- Tunable MO frequencies and beating phenomena offer pathways for novel electronic device applications.
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