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Title: Spin wave and spin flip in hexagonal LuMnO 3 single crystal

Authors:
 [1];  [1];  [2];  [2];  [2]; ORCiD logo [3];  [3]
  1. School of Science and Laboratory of Optical Information Technology, Wuhan Institute of Technology, Wuhan 430205, China
  2. Department of Physics and Division of Nano-Sciences, Ewha Womans University, Seoul 03760, South Korea
  3. Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1361794
Grant/Contract Number:
FG02-07ER46382
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 12; Related Information: CHORUS Timestamp: 2018-02-14 20:37:31; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Chen, Xiang-Bai, Guo, Peng-Cheng, Huyen, Nguyen Thi, Kim, Seung, Yang, In-Sang, Wang, Xueyun, and Cheong, Sang-Wook. Spin wave and spin flip in hexagonal LuMnO 3 single crystal. United States: N. p., 2017. Web. doi:10.1063/1.4979037.
Chen, Xiang-Bai, Guo, Peng-Cheng, Huyen, Nguyen Thi, Kim, Seung, Yang, In-Sang, Wang, Xueyun, & Cheong, Sang-Wook. Spin wave and spin flip in hexagonal LuMnO 3 single crystal. United States. doi:10.1063/1.4979037.
Chen, Xiang-Bai, Guo, Peng-Cheng, Huyen, Nguyen Thi, Kim, Seung, Yang, In-Sang, Wang, Xueyun, and Cheong, Sang-Wook. Mon . "Spin wave and spin flip in hexagonal LuMnO 3 single crystal". United States. doi:10.1063/1.4979037.
@article{osti_1361794,
title = {Spin wave and spin flip in hexagonal LuMnO 3 single crystal},
author = {Chen, Xiang-Bai and Guo, Peng-Cheng and Huyen, Nguyen Thi and Kim, Seung and Yang, In-Sang and Wang, Xueyun and Cheong, Sang-Wook},
abstractNote = {},
doi = {10.1063/1.4979037},
journal = {Applied Physics Letters},
number = 12,
volume = 110,
place = {United States},
year = {Mon Mar 20 00:00:00 EDT 2017},
month = {Mon Mar 20 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4979037

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  • We have investigated the structural, bonding, and electronic properties of both ferroelectric (FE) and paraelectric (PE) phases of the hexagonal LuMnO{sub 3} compound using calculations based on density functional theory. The structural properties have been determined by employing the generalized gradient approximation with Perdew-Burke-Ernzerhof and Wu-Cohen parameterization. The bonding and electronic properties have been treated by recently developed modified Becke-Johnson exchange potential, which succeeded to open a band gap for both PE and FE phases, in agreement with experimental predictions. The Bader’s topological analysis of electronic density showed that the character of the Lu–O axial bonds changes when the crystalmore » exhibits the PE → FE structural transition. This fact is in agreement with experimental findings. The covalent character of the Lu–O bond significantly increases due to orbital hybridization between the Lu 5d{sub z}{sup 2} and O 2p{sub z}-states. This bonding mechanism causes the ferroelectricity in the hexagonal LuMnO{sub 3} compound.« less
  • With decreasing temperature, liquids generally freeze into a solid state, losing entropy in the process. However, exceptions to this trend exist, such as quantum liquids, which may remain unfrozen down to absolute zero owing to strong quantum entanglement effects that stabilize a disordered state with zero entropy. Examples of such liquids include Bose-Einstein condensation of cold atoms, superconductivity, quantum Hall state of electron systems, and quantum spin liquid state in the frustrated magnets. Furthermore, recent studies have clarified the possibility of another exotic quantum liquid state based on the spin-orbital entanglement in FeSc2S4. To confirm this exotic ground state, experimentsmore » based on single-crystalline samples are essential. However, no such single-crystal study has been reported to date. Here, we report, to our knowledge, the first single-crystal study on the spin-orbital liquid candidate, 6H-Ba3CuSb2O9, and we have confirmed the absence of an orbital frozen state. In strongly correlated electron systems, orbital ordering usually appears at high temperatures in a process accompanied by a lattice deformation, called a static Jahn-Teller distortion. By combining synchrotron X-ray diffraction, electron spin resonance, Raman spectroscopy, and ultrasound measurements, we find that the static Jahn-Teller distortion is absent in the present material, which indicates that orbital ordering is suppressed down to the lowest temperatures measured. Lastly, we discuss how such an unusual feature is realized with the help of spin degree of freedom, leading to a spin-orbital entangled quantum liquid state.« less
  • Cited by 7
  • Cited by 7
  • The result of X-ray diffraction study on a single crystal of the calcium-gallogermanate family Ca{sub 3}TaGa{sub 3}Si{sub 2}O{sub 14} (CTGS) modulated by a surface acoustic wave (SAW) is presented. The power flow angle for SAW propagating along the X{sub 2} axis of the X-cut in CTGS was measured. The rocking curves for the CTGS crystal were recorded at different amplitudes of an input high frequency electric signal on interdigital transducer used to excite a SAW. Based on the data obtained, intensity dependence of diffraction satellites on the amplitude of electric signal exciting a SAW was built. Numerical simulation of themore » crystal rocking curves and dependence of diffraction satellite intensities on the SAW amplitude enabled the selection of a set of material constants at which the most complete coincidence of experimental and calculated results is observed.« less