TY - JOUR
T1 - Superconductivity in Fe-chalcogenides
T2 - Superconducting Materials: Conventional, Unconventional and Undetermined
AU - Chang, Chung-Chieh
AU - Chen, T.K.
AU - Lee, W.C.
AU - Lin, P.H.
AU - Wang, J. M.
AU - Wen, Y.C.
AU - Wu, Meng Ping
AU - Wu, M.K.
PY - 2015/7/15
Y1 - 2015/7/15
N2 - FeSe, which has the simplest crystal structure among the Fe based superconductors, and related chalcogenide superconductors are ideal candidates for investigating the detailed mechanism of the iron-based superconductors. Here, we summarize recent studies on the Fe-chalcogenides, with the goal to address some unresolved questions such as what is the influence of chemical stoichiometry on the phase diagram, what is the exact parent phase of FeSe system, and why can Tcs be so dramatically enhanced in FeSe based superconductors? Recent developments in novel synthesis to prepare chalcogenide crystals, nano-materials and thin films allow the community to begin to address these issues. Then we review physical properties of the Fe chalcogenides, specifically focusing on optical properties, scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy (ARPES) results. These measurements along with recent theories provide a framework for better understanding the origin of superconductivity in FeSe and Fe-chalcogenides.
AB - FeSe, which has the simplest crystal structure among the Fe based superconductors, and related chalcogenide superconductors are ideal candidates for investigating the detailed mechanism of the iron-based superconductors. Here, we summarize recent studies on the Fe-chalcogenides, with the goal to address some unresolved questions such as what is the influence of chemical stoichiometry on the phase diagram, what is the exact parent phase of FeSe system, and why can Tcs be so dramatically enhanced in FeSe based superconductors? Recent developments in novel synthesis to prepare chalcogenide crystals, nano-materials and thin films allow the community to begin to address these issues. Then we review physical properties of the Fe chalcogenides, specifically focusing on optical properties, scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy (ARPES) results. These measurements along with recent theories provide a framework for better understanding the origin of superconductivity in FeSe and Fe-chalcogenides.
KW - Superconductivity
KW - Fe chalcogenides
KW - Fe-vacancy order
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U2 - 10.1016/j.physc.2015.02.011
DO - 10.1016/j.physc.2015.02.011
M3 - Article
SN - 0921-4534
VL - 514
SP - 423
EP - 434
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
ER -