Vacancy-induced nanoscale phase separation in KxFe2–ySe₂ single crystals evidenced by Raman scattering and powder x-ray diffraction

Lazarević, N.; Abeykoon, M.; Stephens, P. W.; Lei, Hechang; Bozin, E. S.; Petrovic, C.; Popović, Z. V.

doi:10.1103/PhysRevB.86.054503

Title: Vacancy-induced nanoscale phase separation in K_xFe_2–ySe₂ single crystals evidenced by Raman scattering and powder x-ray diffraction

Journal Article · Mon Aug 06 00:00:00 EDT 2012 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.86.054503· OSTI ID:1103079

Lazarević, N.; Abeykoon, M.; Stephens, P. W.; Lei, Hechang; Bozin, E. S.; Petrovic, C.; Popović, Z. V.

Polarized Raman scattering spectra of K_xFe_2–ySe₂ were analyzed in terms of peculiarities of both I4/m and I4/mmm space group symmetries. The presence of the Raman active modes from both space group symmetries (16 Raman-active modes of the I4/m phase and two Raman-active modes of the I4/mmm phase) confirmed the existence of two crystallographic domains with different space group symmetry in a K_xFe_2–ySe₂ sample. High-resolution synchrotron powder x-ray diffraction structural refinement of the same sample confirmed the two-phase description, and determined the atomic positions and occupancies for both domains.

View Accepted Manuscript (Publisher)

Cite

Export

Save

Sponsoring Organization:: USDOE

OSTI ID:: 1103079

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Vol. 86 Journal Issue: 5; ISSN 1098-0121

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 41 works

Citation information provided by
Web of Science

References (17)

Giant increase in critical current density of K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ single crystals Lei, Hechang; Petrovic, C. Physical Review B, Vol. 84, Issue 21 https://doi.org/10.1103/PhysRevB.84.212502	journal	December 2011
Structure of vacancy-ordered single-crystalline superconducting potassium iron selenide Zavalij, P.; Bao, Wei; Wang, X. F. Physical Review B, Vol. 83, Issue 13 https://doi.org/10.1103/PhysRevB.83.132509	journal	April 2011
Raman-scattering study of $K_{x} {Sr}_{1 - x} {Fe}_{2} {As}_{2}$ $(x = 0.0, 0.4)$ Litvinchuk, A. P.; Hadjiev, V. G.; Iliev, M. N. Physical Review B, Vol. 78, Issue 6 https://doi.org/10.1103/PhysRevB.78.060503	journal	August 2008
${}^{57}{Fe}$ Mössbauer study of magnetic ordering in superconducting $K_{0.80} {Fe}_{1.76} {Se}_{2.00}$ single crystals Ryan, D. H.; Rowan-Weetaluktuk, W. N.; Cadogan, J. M. Physical Review B, Vol. 83, Issue 10 https://doi.org/10.1103/PhysRevB.83.104526	journal	March 2011
Coexistence of Magnetism and Superconductivity in the Iron-Based Compound ${Cs}_{0.8} ({FeSe}_{0.98})_{2}$ Shermadini, Z.; Krzton-Maziopa, A.; Bendele, M. Physical Review Letters, Vol. 106, Issue 11 https://doi.org/10.1103/PhysRevLett.106.117602	journal	March 2011
Room temperature antiferromagnetic order in superconducting X _y Fe _{2 − x} Se ₂ (X = Rb, K): a neutron powder diffraction study Pomjakushin, V. Yu; Pomjakushina, E. V.; Krzton-Maziopa, A. Journal of Physics: Condensed Matter, Vol. 23, Issue 15 https://doi.org/10.1088/0953-8984/23/15/156003	journal	April 2011
Electronic Identification of the Parental Phases and Mesoscopic Phase Separation of $K_{x} {Fe}_{2 - y} {Se}_{2}$ Superconductors Chen, F.; Xu, M.; Ge, Q. Q. Physical Review X, Vol. 1, Issue 2 https://doi.org/10.1103/PhysRevX.1.021020	journal	December 2011
Superconductivity mediated by the antiferromagnetic spin wave in chalcogenide iron-based superconductors Zhang, G. M.; Lu, Z. Y.; Xiang, T. Physical Review B, Vol. 84, Issue 5 https://doi.org/10.1103/PhysRevB.84.052502	journal	August 2011
Common Crystalline and Magnetic Structure of Superconducting $A_{2} {Fe}_{4} {Se}_{5}$ ( $A = K, Rb, Cs, Tl$ ) Single Crystals Measured Using Neutron Diffraction Ye, F.; Chi, S.; Bao, Wei Physical Review Letters, Vol. 107, Issue 13 https://doi.org/10.1103/PhysRevLett.107.137003	journal	September 2011
Iron-vacancy superstructure and possible room-temperature antiferromagnetic order in superconducting Cs $_{y}$ Fe $_{2 - x}$ Se $_{2}$ Pomjakushin, V. Yu.; Sheptyakov, D. V.; Pomjakushina, E. V. Physical Review B, Vol. 83, Issue 14 https://doi.org/10.1103/PhysRevB.83.144410	journal	April 2011
Nanoscale phase separation of antiferromagnetic order and superconductivity in K0.75Fe1.75Se2 Yuan, R. H.; Dong, T.; Song, Y. J. Scientific Reports, Vol. 2, Issue 1 https://doi.org/10.1038/srep00221	journal	January 2012
Phase Diagram of $K_{x} {Fe}_{2 - y} {Se}_{2 - z} S_{z}$ and the Suppression of its Superconducting State by an $Fe 2 − Se / S$ Tetrahedron Distortion Lei, Hechang; Abeykoon, Milinda; Bozin, Emil S. Physical Review Letters, Vol. 107, Issue 13 https://doi.org/10.1103/PhysRevLett.107.137002	journal	September 2011
Phase separation and magnetic order in K-doped iron selenide superconductor Li, Wei; Ding, Hao; Deng, Peng Nature Physics, Vol. 8, Issue 2 https://doi.org/10.1038/nphys2155	journal	November 2011
Effect of varying iron content on the transport properties of the potassium-intercalated iron selenide $K_{x}$ Fe $_{2 - y}$ Se $_{2}$ Wang, D. M.; He, J. B.; Xia, T. -L. Physical Review B, Vol. 83, Issue 13 https://doi.org/10.1103/PhysRevB.83.132502	journal	April 2011
The Raman effect in crystals Loudon, R. Advances in Physics, Vol. 13, Issue 52 https://doi.org/10.1080/00018736400101051	journal	October 1964
A Novel Large Moment Antiferromagnetic Order in K _0.8 Fe _1.6 Se ₂ Superconductor Bao, Wei; Huang, Qing-Zhen; Chen, Gen-Fu Chinese Physics Letters, Vol. 28, Issue 8 https://doi.org/10.1088/0256-307X/28/8/086104	journal	August 2011
Vacancy ordering and phonon spectrum of the iron-based superconductor K $_{0.8}$ Fe $_{1.6}$ Se $_{2}$ Zhang, A. M.; Liu, K.; Xiao, J. H. Physical Review B, Vol. 85, Issue 2 https://doi.org/10.1103/PhysRevB.85.024518	journal	January 2012

Similar Records

Fe Vacancy Order and Domain Distribution in A{sub x}Fe{sub 2−y}Se{sub 2}

Journal Article · Thu Mar 15 00:00:00 EDT 2018 · Journal of Superconductivity and Novel Magnetism · OSTI ID:1103079

Duan, Chunruo; Louca, Despina

Insulating and metallic spin glass in K_xFe_2-δ-yNi_ySe₂ (0.06 ≤ y ≤ 1.44 ) single crystals

Journal Article · Mon May 04 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1103079

Ryu, Hyejin; Abeykoon, Milinda; Wang, Kefeng; +6 more

On the Nanoscale Structure of K_xFe_2-yCh₂ (Ch = S, Se): A Neutron Pair Distribution Function View

Journal Article · Tue Jul 03 00:00:00 EDT 2018 · Condensed Matter · OSTI ID:1103079

Mangelis, Panagiotis; Lei, Hechang; McDonnell, Marshall; +4 more

Title: Vacancy-induced nanoscale phase separation in KxFe2–ySe₂ single crystals evidenced by Raman scattering and powder x-ray diffraction

Citation Formats

References (17)

Similar Records

Related Subjects

Title: Vacancy-induced nanoscale phase separation in K_xFe_2–ySe₂ single crystals evidenced by Raman scattering and powder x-ray diffraction