Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102148
Title: Highly mobile carriers in iron-based superconductors
Authors: Ovchenkov, Y. A.
Chareev, D. A.
Kulbachinskii, V. A.
Kytin, V. G.
Presnov, D. E.
Volkova, O. S.
Vasiliev, A. N.
Issue Date: 2017
Publisher: Institute of Physics Publishing
Citation: Highly mobile carriers in iron-based superconductors / Y. A. Ovchenkov, D. A. Chareev, V. A. Kulbachinskii, et al. — DOI 10.1088/1361-6668/aa570a // Superconductor Science and Technology. — 2017. — Vol. 30. — Iss. 3. — 035017.
Abstract: The field and temperature dependencies of the resistivity and Hall effect are measured for FeSe1-xSx (x = 0.04, 0.09, and 0.19) single crystals. Sample FeSe0.81S0.19 does not show a transition to an orthorhombic phase and at low temperatures exhibits transport properties, which are very different from those of orthorhombic samples. The behavior of FeSe0.81S0.19 is well described by the simple two-band model with comparable values of the hole and electron mobilities. The characteristics of the low-temperature transport properties of the orthorhombic Fe(SeS) samples are largely determined by the presence of a small number of highly mobile carriers, which may originate from the local regions of the Fermi surface, presumably, nearby the Van Hove singularity points. Our results, for the first time, demonstrate a strong evolution of a tiny band of highly mobile electrons at a tetragonal to orthorhombic quantum phase transition. The behavior of this band can be the reason for the diverging nematic susceptibility, determined from elastoresistivity, which is considered one of the most intriguing phenomena in the physics of iron-based superconductors. © 2017 IOP Publishing Ltd Printed in the UK.
Keywords: HALL EFFECT
IRON-BASED SUPERCONDUCTORS
MAGNETORESISTANCE
NEMATICITY
PHASE TRANSITIONS
HALL EFFECT
HIGH TEMPERATURE SUPERCONDUCTORS
IRON
MAGNETORESISTANCE
PHASE TRANSITIONS
SINGLE CRYSTALS
SUPERCONDUCTING MATERIALS
TEMPERATURE
TRANSPORT PROPERTIES
HIGHLY MOBILE ELECTRONS
LOW TEMPERATURE TRANSPORT PROPERTIES
LOW TEMPERATURES
NEMATICITY
ORTHORHOMBIC PHASE
QUANTUM PHASE TRANSITIONS
TEMPERATURE DEPENDENCIES
VAN HOVE SINGULARITIES
IRON-BASED SUPERCONDUCTORS
URI: http://hdl.handle.net/10995/102148
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85014518126
PURE ID: 1610238
81031802-b0f9-4ab6-bce2-4385b20abf87
ISSN: 9532048
DOI: 10.1088/1361-6668/aa570a
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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