LAUSR

Landau levels (LLs) are modified by the Frohlich interaction which we investigate within the improved Wigner-Brillouin theory for energies both below and above the longitudinal-optical-continuum in monolayer MoS2, WS2, MoSe2, and WSe2. Polaron corrections to the LLs are enhanced in monolayer MoS2 as compared to WS2. A series of levels are found at ℏ ω L O + l ℏ ω c, and in addition, the Frohlich interaction lifts the degeneracy between the levels n ℏ ω c and ℏ ω L O + l ℏ ω c resulting in an anticrossing. The screening effect due to the environment plays an important role in the polaron energy corrections, which are also affected by the effective thickness reff parameter. The polaron anticrossing energy gap Egap decreases with increasing effective thickness reff.Landau levels (LLs) are modified by the Frohlich interaction which we investigate within the improved Wigner-Brillouin theory for energies both below and above the longitudinal-optical-continuum in monolayer MoS2, WS2, MoSe2, and WSe2. Polaron corrections to the LLs are enhanced in monolayer MoS2 as compared to WS2. A series of levels are found at ℏ ω L O + l ℏ ω c, and in addition, the Frohlich interaction lifts the degeneracy between the levels n ℏ ω c and ℏ ω L O + l ℏ ω c resulting in an anticrossing. The screening effect due to the environment plays an important role in the polaron energy corrections, which are also affected by the effective thickness reff parameter. The polaron anticrossing energy gap Egap decreases with increasing effective thickness reff.