85 citations · 606 across the 20 of their papers we have counts for
20 papers
Exciton-induced magnons carrying orbital angular momentum in CrI3
Martin Pavelka, Vishal Shokeen, Ruslan Chulkov +15
Magnons are collective spin excitations that contain and transport spin angular momentum in magnetic materials. It has been suggested that they can also carry orbital angular momen…
Accessing Few-Layer CrI Magnetoelasticity Through Bulk Single Crystals
J. Arneth, M. Möller, D. A. S. Kaib +9
The persistence of ferromagnetic long-range order in monolayers of the van der Waals semiconductor CrI opens new routes for spintronic applications based on two-dimensional qua…
Anomalous Charge Density Wave and Fermi Surface Reconstruction in Pressurized BaFe2Al9
Govindaraj Lingannan, M. Sundaramoorthy, Nabeel M. Jasim +9
The intermetallic compound BaFe2Al9 exhibits unusual physical properties associated with a charge density wave (CDW) transition. Unlike conventional CDW materials, which typically…
Coexistence of Superconductivity and Charge Density Wave in Tantalum Disulfide: Experiment and Theory
Y. Kvashnin, D. VanGennep, M. Mito +6
The coexistence of charge density wave (CDW) and superconductivity in tantalum disulfide (2H-TaS) at ambient pressure, is boosted by applying hydrostatic pressures up to 30GPa,…
Pressure-Induced Re-entrant transition in NbS3 Phases: Combined Raman Scattering and X-ray Diffraction Study
Abdel-Hafiez, M. Thiyagarajan, R. Majumdar +13
We report the evolution of charge density wave states under pressure for two NbS3 phases triclinic (phase I) and monoclinic (phase II) at room temperature. Raman and X-ray diffract…
Signature of multigap nodeless superconductivity in fluorine-doped NdFeAsO
A. Adamski, C. Krellner, M. Abdel-Hafiez
We investigate the temperature dependence of the lower critical field , the field at which vortices penetrate into the sample, of a high-quality fluorine-doped NdFeAsO s…
Probing Bulk Superconducting Order Parameter in Ba(K)FeAs by Four Complementary Techniques
A. V. Muratov, T. E. Kuzmicheva, A. V. Sadakov +7
Using four different experimental techniques, we performed comprehensive studies of the bulk superconductive properties of single crystals of the nearly optimally doped $Ba_{1-x}K_…
Orbitally induced hierarchy of exchange interactions in zigzag antiferromagnetic state of honeycomb silver delafossite Ag3Co2SbO6
E. A. Zvereva, M. I. Stratan, A. V. Ushakov +6
We report the revised crystal structure, static and dynamic magnetic properties of quasi-two dimensional honeycomb-lattice silver delafossite Ag3Co2SbO6. The magnetic susceptibilit…
Lower critical field and SNS-Andreev spectroscopy of 122-arsenides: Evidence of nodeless superconducting gap
M. Abdel-Hafiez, P. J. Pereira, S. A. Kuzmichev +10
Using two experimental techniques, we studied single crystals of the 122-FeAs family with almost the same critical temperature, Tc. We investigated the temperature dependence of th…
Specific heat of K071Na0.29Fe2As2 at very low temperatures
A. Reifenberger, M. Hempel, P. Vogt +8
A commercially available calorimeter has been used to investigate the specific heat of a high-quality \kn\ single crystal. The addenda heat capacity of the calorimeter is determine…
Specific heat of CaNaFeAs single crystals: unconventional s multi-band superconductivity with intermediate repulsive interband coupling and sizable attractive intraband couplings
S. Johnston, M. Abdel-Hafiez, L. Harnagea +9
We report a low-temperature specific heat study of high-quality single crystals of the heavily hole doped superconductor CaNaFeAs. This compound exhibits…
Evidence of d-wave Superconductivity in K_(1-x)Na_xFe_2As_2 (x = 0, 0.1) Single Crystals from Low-Temperature Specific Heat Measurements
M. Abdel-Hafiez, V. Grinenko, S. Aswartham +20
From the measurement and analysis of the specific heat of high-quality K_(1-x)Na_xFe_2As_2 single crystals we establish the presence of large T^2 contributions with coefficients al…
KFe2As2: coexistence of superconductivity and local moment derived spin-glass
V. Grinenko, M. Abdel-Hafiez, S. Aswartham +9
High-quality KFe2As2 single crystals have been studied by transport, magnetization and low-T specific heat measurements. Their analysis shows that superconductivity occurs (in some…
Hole-doping in BaFeAs: The case of BaNaFeAs single crystals
S. Aswartham, M. Abdel-Hafiez, D. Bombor +11
Single crystals of BaNaFeAs with = 0, 0.25, 0.35, 0.4 were grown using a self-flux high temperature solution growth technique. The superconducting and norma…
Orthogonal spin arrangement as possible ground state of three - dimensional Shastry - Sutherland network in Ba3Cu3In4O12
O. S. Volkova, I. S. Maslova, R. Klingeler +4
The Ba3Cu3In4O12 stands for unique topology of the magnetic subsystem. It consists of rotated by 90\Box relative to each other "paper-chain" columns made of vertex-sharing CuIO…
Magnetic properties of the low-dimensional spin-1/2 magnet α-Cu_2As_2O_7
Y. C. Arango, E. Vavilova, M. Abdel-Hafiez +11
In this work we study the interplay between the crystal structure and magnetism of the pyroarsenate α-Cu_2As_2O_7 by means of magnetization, heat capacity, electron spin resonance…
Specific heat and upper critical field in KFe2As2 single crystals
M. Abdel-Hafiez, S. Aswartham, S. Wurmehl +6
We report low-temperature specific heat measurements for high-quality single crystalline KFe2As2 (T_c about 3.5 K). The investigated zero-field specific heat data yields an unusual…
Calorimetric study of the superconducting and normal state properties of Ca(Fe1-xCox)2As2
M. Abdel-Hafiez, L. Harnagea, S. Singh +5
We present a calorimetric study on single crystals of Ca(Fe1-xCox)2As2 (x = 0, 0.032, 0.051, 0.056, 0.063, and 0.146). The combined first order spin-density wave/structural transit…
Multi-gap superconductivity in single crystals of BaNaFeAs: A calorimetric investigation
A. K. Pramanik, M. Abdel-Hafiez, S. Aswartham +4
We investigate the electronic properties and the superconducting gap characteristics of a single crystal of hole-doped 122 Fe-pnictide BaNaFeAs by means o…
Phase diagram of iron-arsenide superconductors Ca(Fe1-xCox)2As2 (0 <= x <= 0.2)
L. Harnagea, S. Singh, G. Friemel +9
Platelet-like single crystals of the Ca(Fe1-xCox)2As2 series having lateral dimensions up to 15 mm and thickness up to 0.5 mm were obtained from the high temperature solution growt…