71 citations · 458 across the 31 of their papers we have counts for
31 papers
Revealing Intrinsic Anisotropy of Collective Magnetic Excitations in Twinned Crystals of a Kitaev-Heisenberg Quantum Magnet
Naipeng Zhang, Nikolai Simonov, Mykhaylo Ozerov +11
Quantum magnets with competing interactions often emerge from delicate balances among microscopic parameters, making it essential to disentangle intrinsic spin dynamics from extrin…
Flat-Band Generation in InAs/GaSb Quantum Wells through Vertically Engineered Heterostructures
Zachery A. Enderson, Jiyuan Fang, Wei-Chen Wang +8
Quantum materials constitute a novel category of substances wherein quantum effects and electron-electron (e-e) interactions give rise to unforeseen phenomena on a macroscopic scal…
Isotropic Dirac fermion and anomalous oscillator strength of zeroth Landau level transition
Zeping Shi, Wenbin Wu, Guangyi Wang +12
Dirac fermions, characterized by their linear dispersion and relativistic nature, have emerged as a prominent class of quasiparticles in condensed matter physics. While the Dirac e…
Field-induced magnetic phase transition driven by a ground state level-crossing in CsErSe
Hope Whitelock, Allen O. Scheie, Marissa McMaster +12
We report a comprehensive study of the low-temperature magnetic properties of the insulating rare-earth triangular magnet CsErSe. We uncover a field-induced level crossing at t…
Terahertz field-induced giant symmetry modulations in a van der Waals antiferromagnet
Sheikh Rubaiat Ul Haque, Martin J. Cross, Sangeeta Rajpurohit +19
Strong-field terahertz (THz) excitations enable dynamic control over electronic, lattice and symmetry degrees of freedom in quantum materials. Here, we uncover pronounced terahertz…
Linear scaling relation between two-dimensional massless Dirac fermion Fermi velocity and Fe-As bond length in iron arsenide superconductor systems
Chengpu Lv, Jianzhou Zhao, Yueshan Xu +6
Two-dimensional (2D) massless Dirac fermions (MDF), which represent a type of quasi-particles with linear energy-momentum dispersions only in 2D momentum space, provide a fertile g…
Applied-field magnetic structure and spectroscopy shifts of the effective spin-, -like magnet LiCoCl
Zachary W. Riedel, Mykhaylo Ozerov, Stuart Calder +1
Insulators containing chains of magnetic transition metal cations provide platforms for probing spin- dynamics and quantum critical behavior. LiCoCl contains e…
Unveiling three types of fermions in a nodal ring topological semimetal through magneto-optical transitions
Jiwon Jeon, Taehyeok Kim, Jiho Jang +5
We investigate the quasiparticles of a single nodal ring semimetal SrAs through axis-resolved magneto-optical measurements. We observe three types of Landau levels scaling as $…
Observation of quantum oscillations near the Mott-Ioffe-Regel limit in CaAs3
Yuxiang Wang, Minhao Zhao, Jinglei Zhang +24
The Mott-Ioffe-Regel limit sets the lower bound of carrier mean free path for coherent quasiparticle transport. Metallicity beyond this limit is of great interest because it is oft…
Disorder-enriched magnetic excitations in the Kitaev quantum spin liquid candidate NaCoTeO
Li Xiang, Ramesh Dhakal, Mykhaylo Ozerov +9
Using optical magneto-spectroscopy, we investigate the magnetic excitations of NaCoTeO in a broad magnetic field range () at low tempe…
Revealing temperature evolution of the Dirac band in ZrTe via magneto-infrared spectroscopy
Yuxuan Jiang, Tianhao Zhao, Luojia Zhang +5
We report the temperature evolution of the Dirac band in semiconducting zirconium pentatelluride (ZrTe) using magneto-infrared spectroscopy. We find that the band gap is temper…
Energy gap of topological surface states in proximity to a magnetic insulator
Jiashu Wang, Tianyi Wang, Mykhaylo Ozerov +14
Topological surface-states can acquire an energy gap when time-reversal symmetry is broken by interfacing with a magnetic insulator. This gap has yet to be measured. Such topologic…
Topological Lifshitz transition and one-dimensional Weyl mode in HfTe5
Wenbin Wu, Zeping Shi, Yuhan Du +11
Landau band crossings typically stem from the intra-band evolution of electronic states in magnetic fields and enhance the interaction effect in their vicinity. Here in the extreme…
Coherent strong-coupling of terahertz magnons and phonons in a Van der Waals antiferromagnetic insulator
Qi Zhang, Mykhaylo Ozerov, Emil Vinas Boström +10
Emergent cooperative motions of individual degrees of freedom, i.e. collective excitations, govern the low-energy response of system ground states under external stimulations and p…
Magnetic field tuning of crystal field levels and vibronic states in Spin-ice HoTiO observed in far-infrared reflectometry
Mykhaylo Ozerov, Naween Anand, L. J. van de Burgt +5
Low temperature optical spectroscopy in applied magnetic fields provides clear evidence of magnetoelastic coupling in the spin ice material HoTiO. In far-IR reflectomet…
Spectroscopic analysis of vibronic relaxation pathways in molecular spin qubit Ho(WO): sparse spectra are key
Avery L. Blockmon, Aman Ullah, Kendall D. Hughey +8
Molecular vibrations play a key role in magnetic relaxation processes of molecular spin qubits as they couple to spin states, leading to the loss of quantum information. Direct exp…
Electron-Hole Asymmetry of Surface States in Topological Insulator Sb2Te3 Thin Films Revealed by Magneto-Infrared Spectroscopy
Yuxuan Jiang, Mahmoud M. Asmar, Xingyue Han +7
When surface states (SSs) form in topological insulators (TIs), they inherit the properties of bulk bands, including the electron-hole (e-h) asymmetry but with much more profound i…
ESR modes in a Strong-Leg Ladder in the Tomonaga-Luttinger Liquid Phase
M. Ozerov, M. Maksymenko, J. Wosnitza +6
Magnetic excitations in the strong-leg quantum spin ladder compound (CHN)CuBr (known as DIMPY) in the field-induced Tomonaga-Luttinger spin liquid phase are stud…
Electron Spin Resonance in a Spin-1/2 Heisenberg Strong-rung Ladder
A. N. Ponomaryov, M. Ozerov, L. Zviagina +8
Cu(CHN)Cl, a strong-rung spin-1/2 Heisenberg ladder compound, is probed by means of electron spin resonance (ESR) spectroscopy in the field-induced gapless phase ab…
Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
M. Ozerov, J. Romhányi, M. Belesi +6
The recent discovery of skyrmions in CuOSeO has established a new platform to create and manipulate skyrmionic spin textures. We use high-field electron spin resonance (ESR…
High-field spectroscopy of singlet-triplet transitions in the spin-dimer systems Sr3Cr2O8 and Ba3Cr2O8
Zhe Wang, D. Kamenskyi, O. Cépas +14
Magnetic excitations in the isostructural spin-dimer systems Sr3Cr2O8 and Ba3Cr2O8 are probed by means of high-field electron spin resonance at sub-terahertz frequencies. Three typ…
Direct determination of exchange parameters in Cs2CuBr4 and Cs2CuCl4: high-field ESR studies
S. A. Zvyagin, D. Kamenskyi, M. Ozerov +12
Spin-1/2 Heisenberg antiferromagnets CsCuCl and CsCuBr with distorted triangular-lattice structures are studied by means of electron spin resonance spectroscopy in…
Magnetic excitations in the spin-1/2 triangular-lattice antiferromagnet CsCuBr
S. A. Zvyagin, M. Ozerov, D. Kamenskyi +8
We report on high-field electron spin resonance (ESR) studies of magnetic excitations in the spin-1/2 triangular-lattice antiferromagnet CsCuBr. Frequency-field diagrams of…
ESR of coupled spin-1/2 chains: unveiling zig-zag-type interchain correlations
A. A. Validov, M. Ozerov, J. Wosnitza +4
By means of electron spin resonance investigations we revealed the crucial role of the interchain coupling in the spin dynamics of the spin-1/2 Heisenberg antiferromagnetic (AF) ch…