303 citations · 735 across the 16 of their papers we have counts for
16 papers
Synthesis and Characterization of Sodium Iron Antimonate Na2FeSbO5 One-Dimensional Antiferromagnetic Chain Compound with a Spin Glass Ground State
Uma Sitharaman, Vasilchikova Tatyana, Sobolev Alexey +9
A new oxide, sodium iron antimonate, Na2FeSbO5, was synthesized and structurally characterized, and its static and dynamic magnetic properties were comprehensively studied both exp…
Peculiarities of magnetic ordering in the S = 5/2 two-dimensional square-lattice antimonate NaMnSbO4
Tatyana Vasilchikova, Vladimir Nalbandyan, Igor Shukaev +9
An orthorhombic compound, NaMnSbO4, represents a square net of magnetic Mn2+ ions residing in vertex-shared oxygen octahedra. Its static and dynamic magnetic properties were studie…
Highly mobile carriers in orthorhombic phases of iron-based superconductors FeSeS
Y. A. Ovchenkov, D. A. Chareev, V. A. Kulbachinskii +4
The field and temperature dependencies of the longitudinal and Hall resistivity have been measured for FeSeS (x=0.04, 0.09 and 0.19) single crystals. The sample F…
Unveiling the hidden nematicity and spin subsystem in FeSe
C. W. Luo, P. C. Cheng, S. -H. Wang +7
The nematic order (nematicity) is considered one of the essential ingredients to understand the mechanism of Fe-based superconductivity. In most Fe-based superconductors (pnictides…
Structural phase transitions in the kagome lattice based materials Cs2-xRbxSnCu3F12 (x = 0, 0.5, 1.0, 1.5)
L. J. Downie, C. Black, E. I. Ardashnikova +6
The solid solution Cs2-xRbxSnCu3F12 (x = 0, 0.5, 1.0, 1.5) has been investigated crystallographically between 100 and 300 K using synchrotron X-ray powder diffraction and, in the c…
Study of the itinerant electron magnetism of Fe-based superconductors by the proximity effect
Yu. N. Chiang, M. O. Dzuba, O. G. Shevchenko +1
We used the proximity effect as a tool to achieve an ideal (barrier - free) NS boundary for quantitative evaluation of transport phenomena that accompany converting dissipative cur…
Local Structure and Hyperfine Interactions of 57Fe in NaFeAs Studied by Mossbauer Spectroscopy
Igor Presniakov, Igor Morozov, Alexey Sobolev +7
Detailed 57Fe Mossbauer spectroscopy measurements on superconducting NaFeAs powder samples have been performed in the temperature range 13 K < T < 300 K. The 57Fe spectra recorded…
A 57Fe Mössbauer Study Of Local Structure And Spin Arrangements In Antiferromagnetic NaFeAs
Igor Presniakov, Igor Morozov, Alexey Sobolev +5
Detailed 57Fe Mössbauer spectroscopy measurements on superconducting NaFeAs powder crystals have been performed. The 57Fe spectra recorded in the paramagnetic temperature range (T…
Conductance of non-ballistic point contacts in hybrid systems "normal metal/superconductor" Cu/Mo-C and Cu/LaOFFeAs
Yu. N. Chiang, M. O. Dzyuba, O. G. Shevchenko +1
We consider the shape of the curves of "Andreev" conductance of non-ballistic point contact NS heterosystems depending on the bias voltage at the contact. The obtained shape of tho…
Quasiparticle dynamics and phonon softening in FeSe superconductors
C. W. Luo, I. H. Wu, P. C. Cheng +8
Quasiparticle dynamics of FeSe single crystals revealed by dual-color transient reflectivity measurements (ΔR/R) provides unprecedented information on Fe-based superconductors. The…
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…
Coexistence of isotropic s-wave and extended s-wave order parameters in FeSe as revealed by the low-temperature specific heat
J. -Y. Lin, Y. S. Hsieh, D. A. Chareev +3
The comprehensive low-temperature specific heat C(T) data identify both an isotropic s-wave and an extended s-wave order parameters coexisting in a superconducting single crystal F…
Weak superconducting pairing and a single isotropic energy gap in stoichiometric LiFeAs
D. S. Inosov, J. S. White, D. V. Evtushinsky +15
We report superconducting (SC) properties of stoichiometric LiFeAs (Tc = 17 K) studied by small-angle neutron scattering (SANS) and angle-resolved photoemission (ARPES). Although t…
Superconductivity without magnetism in LiFeAs
S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky +8
The particular shape of the Fermi surface can give rise to a number of collective quantum phenomena in solids, such as density wave orderings or even superconductivity. In many new…
Quantum electric dipole glass and frustrated magnetism near a critical point in Li2ZrCuO4
E. Vavilova, A. S. Moskvin, Y. Arango +7
We report a new peculiar effect of the interaction between a sublattice of frustrated quantum spin-1/2 chains and a sublattice of pseudospin-1/2 centers (quantum electric dipoles)…
Thermodynamics of the coupled spin-dimer system TlCuCl3 close to a quantum phase transition
T. Lorenz, S. Stark, O. Heyer +4
We present thermal expansion alpha, magnetostriction and specific heat C measurements of \tal, which shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground…