Many-particle effects in optical transitions from zero-mode Landau levels in HgTe quantum wells

Abstract

We report on the far-infrared magnetospectroscopy of HgTe quantum wells with inverted band ordering at different electron concentrations. We particularly focus on optical transitions from zero-mode Landau levels, which split from the edges of electron-like and hole-like bands. We observe a pronounced dependence of the transition energies on the electron concentration varied by persistent photoconductivity effect. This is striking evidence that in addition to the already well-documented crystalline and interface asymmetries, electron-electron interactions also have a significant impact on the usual behavior of the optical transitions from zero mode Landau levels.

arXiv comment5 pages, 4 figures and supplemental materials

References in corpus (32)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• The Quantum Spin Hall Effect: Theory and Experiment
• Quantum Spin Hall Effect in Inverted Type II Semiconductors
• Infrared spectroscopy of Landau levels in graphene
• Spin polarization of the quantum spin Hall edge states
• Single valley Dirac fermions in zero-gap HgTe quantum wells
• Temperature-driven massless Kane fermions in HgCdTe crystals: verification of universal velocity and rest-mass description
• Interaction-induced shift of the cyclotron resonance of graphene using infrared spectroscopy
• Pressure and temperature driven phase transitions in HgTe quantum wells
• Split Dirac cones in HgTe/CdTe quantum wells due to symmetry-enforced level anticrossing at interfaces
• Strain Engineering of the Band Gap of HgTe Quantum Wells using Superlattice Virtual Substrates
• Landau level spectroscopy of electron-electron interactions in graphene
• Fine structure of "zero-mode" Landau levels in HgTe/HgCdTe quantum wells
• Magnetic field effects on edge and bulk states in topological insulators based on HgTe/CdHgTe quantum wells with strong natural interface inversion asymmetry
• Temperature-induced topological phase transition in HgTe quantum wells
• Temperature-driven single-valley Dirac fermions in HgTe quantum wells
• Phase transitions in two tunnel-coupled HgTe quantum wells. Bilayer graphene analogy and beyond
• Large gap quantum spin Hall insulator, massless Dirac fermions and bilayer graphene analogue in InAs/Ga(In)Sb heterostructures
• Spin-orbit splitting of valence and conduction bands in HgTe quantum wells near the Dirac point
• Temperature-driven transition from a semiconductor to a topological insulator
• Many-particle effects in the cyclotron resonance of encapsulated monolayer graphene
• Cyclotron resonance of single valley Dirac fermions in gapless HgTe quantum well
• Temperature-dependent magnetospectroscopy of HgTe quantum wells
• Massless Dirac fermions in III-V semiconductor quantum wells
• Perspectives of HgTe Topological Insulators for Quantum Hall Metrology
• Terahertz detection of magnetic field-driven topological phase transition in HgTe-based transistors
• Landau level spectroscopy of valence bands in HgTe quantum wells: Effects of symmetry lowering
• Disorder-induced phase transition in Dirac systems beyond the linear approximation
• Many-body corrections to ESR energy and spin-wave excitations in two-dimensional systems with Bychkov-Rashba spin splitting
• Two dimensional topological insulator in quantizing magnetic fields
• Spin splitting of surface states in HgTe quantum wells

Cited by in corpus (4)

• Unconventional Reentrant Quantum Hall Effect in a HgTe/CdHgTe Double Quantum Well
• Disorder-induced phase transitions in double HgTe quantum wells
• Quasiparticle picture of topological phase transitions induced by interactions
• Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells