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Title: Temperature and composition phase diagram in the iron-based ladder compounds Ba 1 - x Cs x Fe 2 Se 3

We investigated the iron-based ladder compounds (Ba,Cs)Fe₂Se₃. Their parent compounds BaFe₂Se₃ and CsFe₂Se₃ have different space groups, formal valences of Fe, and magnetic structures. Electrical resistivity, specific heat, magnetic susceptibility, x-ray diffraction, and powder neutron diffraction measurements were conducted to obtain a temperature and composition phase diagram of this system. Block magnetism observed in BaFe₂Se₃ is drastically suppressed with Cs doping. In contrast, stripe magnetism observed in CsFe₂Se₃ is not so fragile against Ba doping. A new type of magnetic structure appears in intermediate compositions, which is similar to stripe magnetism of CsFe₂Se₃, but interladder spin configuration is different. Intermediate compounds show insulating behavior, nevertheless a finite T-linear contribution in specific heat was obtained at low temperatures.
Authors:
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Publication Date:
Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Volume: 91 Journal Issue: 18; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
OSTI Identifier:
1183245

Hawai, Takafumi, Nambu, Yusuke, Ohgushi, Kenya, Du, Fei, Hirata, Yasuyuki, Avdeev, Maxim, Uwatoko, Yoshiya, Sekine, Yurina, Fukazawa, Hiroshi, Ma, Jie, Chi, Songxue, Ueda, Yutaka, Yoshizawa, Hideki, and Sato, Taku J. Temperature and composition phase diagram in the iron-based ladder compounds Ba 1 - x Cs x Fe 2 Se 3. United States: N. p., Web. doi:10.1103/PhysRevB.91.184416.
Hawai, Takafumi, Nambu, Yusuke, Ohgushi, Kenya, Du, Fei, Hirata, Yasuyuki, Avdeev, Maxim, Uwatoko, Yoshiya, Sekine, Yurina, Fukazawa, Hiroshi, Ma, Jie, Chi, Songxue, Ueda, Yutaka, Yoshizawa, Hideki, & Sato, Taku J. Temperature and composition phase diagram in the iron-based ladder compounds Ba 1 - x Cs x Fe 2 Se 3. United States. doi:10.1103/PhysRevB.91.184416.
Hawai, Takafumi, Nambu, Yusuke, Ohgushi, Kenya, Du, Fei, Hirata, Yasuyuki, Avdeev, Maxim, Uwatoko, Yoshiya, Sekine, Yurina, Fukazawa, Hiroshi, Ma, Jie, Chi, Songxue, Ueda, Yutaka, Yoshizawa, Hideki, and Sato, Taku J. 2015. "Temperature and composition phase diagram in the iron-based ladder compounds Ba 1 - x Cs x Fe 2 Se 3". United States. doi:10.1103/PhysRevB.91.184416.
@article{osti_1183245,
title = {Temperature and composition phase diagram in the iron-based ladder compounds Ba 1 - x Cs x Fe 2 Se 3},
author = {Hawai, Takafumi and Nambu, Yusuke and Ohgushi, Kenya and Du, Fei and Hirata, Yasuyuki and Avdeev, Maxim and Uwatoko, Yoshiya and Sekine, Yurina and Fukazawa, Hiroshi and Ma, Jie and Chi, Songxue and Ueda, Yutaka and Yoshizawa, Hideki and Sato, Taku J.},
abstractNote = {We investigated the iron-based ladder compounds (Ba,Cs)Fe₂Se₃. Their parent compounds BaFe₂Se₃ and CsFe₂Se₃ have different space groups, formal valences of Fe, and magnetic structures. Electrical resistivity, specific heat, magnetic susceptibility, x-ray diffraction, and powder neutron diffraction measurements were conducted to obtain a temperature and composition phase diagram of this system. Block magnetism observed in BaFe₂Se₃ is drastically suppressed with Cs doping. In contrast, stripe magnetism observed in CsFe₂Se₃ is not so fragile against Ba doping. A new type of magnetic structure appears in intermediate compositions, which is similar to stripe magnetism of CsFe₂Se₃, but interladder spin configuration is different. Intermediate compounds show insulating behavior, nevertheless a finite T-linear contribution in specific heat was obtained at low temperatures.},
doi = {10.1103/PhysRevB.91.184416},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 18,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}