Songxue Chi

Songxue Chi

Position: Instrument Scientist

Instrument: Triple-Axis Spectrometer

Group: Triple-Axis Spectroscopy

Division: Quantum Condensed Matter Division

Facility: High Flux Isotope Reactor

Contact: chis@ornl.gov or (865) 603-3241

Oak Ridge National Laboratory, USA
01/2013 – present R&D staff, Instrument scientist

Oak Ridge National Laboratory, USA
11/2010 – 01/2013 Post doctoral associate

NIST Center for Neutron Research, USA
01/2009 – 11/2010 Instrument scientist

University of Tennessee, Knoxville
08/2003 - 12/2008 Teaching and Research Assistant

Education

2008 PhD in Physics The University of Tennessee, Knoxville, TN, USA

Research

Experimental studies of strongly correlated electron systems such as superconducting Fe-based compounds and multiferroics using neutron scattering as the main tool.

Selected Publications

​Songxue Chi, Yoshiya Uwatoko, Huibo Cao, Yasuyuki Hirata, Kazuki Hashizume, Takuya Aoyama, and Kenya Ohgushi  “The magnetic precursor of the pressure-induced superconductivity in Fe-ladder compound”     Phys. Rev. Lett. 117, 047003 (2016)

C. W. Li, J. Hong, A. May, D. Bansal, T. Hong, Songxue Chi, G. Ehlers, and O. Delaire,Anharmonic phonons from orbitally driven lattice instability in SnSe”     Nature Physics 3492, (2015).

Qiang Zhang, Rafael M. Fernandes, Jagat Lamsal, Jiaqiang Yan, Songxue Chi, Daniel K. Pratt, Je_rey W. Lynn, R. W. McCallum, Paul C. Canfield, Thomas A. Lograsso, Alan Goldman, David Vaknin, and Robert J. McQueeney “Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(Fe0.953Co0.047)2As2: Evidence for a sharp enhancement of spin uctuations by nematic order”     Phys. Rev. Lett. 114, 057001 (2015)

Songxue Chi, Feng Ye, H. D. Zhou, E. S. Choi, J. Hwang, Huibo Cao, Jaime A. Fernandez-Baca "Magnetoelectric coupling tuned by competing single iron anisotropies in Mn1-xNixTiO3"     Phys. Rev. B. 90 144429 (2014)

Zhijun Xu, C. Stock, Songxue Chi, A. I. Kolesnikov, Guangyong Xu, Genda Gu, and J. M. Tranquada "Evidence for Intertwining of Superconductivity and Antiferromagnetism in a Cuprate"     Phys. Rev. Lett. 113, 177002 (2014)

Songxue Chi, Feng Ye, Wei Bao, Minghu Fang, H. D. Wang, C. H. Dong, A. T. Savici, G. E. Granroth, M. B. Stone, and R. S. Fishman“Neutron Scattering Study on Spin Dynamics in Superconducting (Tl,Rb)2Fe4Se5” Phys. Rev. B 87, 100501(R) (2013)

Feng Ye, Songxue Chi, Huibo Cao, Bryan Chakoumakos, Jaime A. Fernandez-Baca, Radu Custelcean, Tongfei Qi, O. B. Korneta, and G. Cao "Direct evidence of a zigzag spin chain structure in the honeycomb lattice: A neutron and x-ray diffraction investigation on single crystal Na2IrO3Phys. Rev. B 85, 180403(R) (2012)

Songxue Chi, J. A. Rodriguez, J. W. Lynn, Chenglin Zhang, D. Phelan, D. K. Singh, R. Paul, and Pengcheng Dai, “Common origin of two types of magnetic fluctuations in iron chalcognenides”, Phys. Rev. B 84, 214407(2011)

Feng Ye, Songxue Chi, Wei Bao, X. F. Wang, J. J. Ying, X. H. Chen, H. D. Wang, C. H. Dong, Minghu Fang “Common crystalline and magnetic structure of superconducting A2Fe4Se5 (A=K,Rb,Cs,Tl) single crystals measured using neutron diffraction” Phys. Rev. Lett. 107, 137003 (2011)

Songxue Chi, Jeff W. Lynn, Y. Chen, W. Ratcliff II, Benjamin G. Ueland, N. P. Butch, S. Saha and J. Paglione “Nitrogen Contamination in Elastic Neutron Scattering” Meas. Sci. Technol. 22 047001 (2011).

Shuang Jia, Songxue Chi, J. W. Lynn, R. J. Cava "Magnetic and Structural Properties of Ca(Fe1−xCox)2P2 and Ca(Ni1−xCox)2P2"Phys. Rev. B 81,214446 (2010)

Neeraj Kumar, Songxue Chi, Ying Chen, Kumari Gaurav Rana, A. K. Nigam, A. Thamizhavel, William Ratcliff, II, S. K. Dhar, and Jeffrey W. Lynn “Evolution of the bulk properties, structure, magnetic order, and superconductivity with Ni doping in CaFe2−xNixAs2 ” Phys. Rev. B 80, 144524 (2009).

Feng Ye, Songxue Chi, J. A. Fernandez-Baca, A. Moreo, E. Dagotto, J. W. Lynn, R. Mathieu, Y. Kaneko, Y. Tokura, and Pengcheng Dai “Electronic Self-Organization in the Single-Layer Manganite Pr1-xCa1+xMnO4” Phys. Rev. Lett. 103, 167202 (2009).

Songxue Chi, Astrid Schneidewind, Jun Zhao, Leland W. Harriger, Linjun Li, Yongkang Luo, Guanghan Cao, Zhu’an Xu, Michael Loewenhaupt, Jianping Hu and Pengcheng Dai, “Inelastic neutron scattering measurements of a three-dimensional spin resonance in the FeAs-based BaFe1.9Ni0.1As2 superconductor ” Phys. Rev. Lett. 102, 107006 (2009).

Songxue Chi, D. T. Adroja, T. Guidi, R. Bewley, Shliang Li, Jun Zhao, J. W. Lynn, C. M. Brown, Y. Qiu, G. F. Chen, J. L. Lou, N. L. Wang, and Pengcheng Dai, “The crystalline electric field as a probe for long range antiferromagnetic order and superconductivity in CeFeAsO1−xFx, ” Phys. Rev. Lett. 101, 217002 (2008).

Songxue Chi, Pengcheng Dai, T. Barnes, H. J. Kang, J. W. Lynn, R. Bewley, F. Ye, M. B. Maple, Z. Henkie, and A. Pietraszko “Inelastic neutron scattering study of crystal field levels in PrOs4As12 ” Phys. Rev. B 77, 094428 (2008)

Songxue Chi, F. Ye , Pengcheng Dai, J. A. Fernandez-Baca , Q. Huang , J. W. Lynn , E. W. Plummer, R. Mathieu, Y. Kaneko, and Y. Tokura “Effect of antiferromagnetic spin correlations on lattice distortion and charge ordering in Pr0.5Ca1.5MnO4 ” PNAS 104, 11796-11801 (2007).

Stephen D. Wilson, Pengcheng Dai, Shiliang Li, Songxue Chi, H. J. Kang and J. W. Lynn, “Resonance in the electron doped high transition temperature superconductor Pr0.88LaCe0.12CuO4-δ ” Nature 442, 59-62 (2006)

 

Awards, Honors and Memberships

Chancellor’s Honor for Extraordinary Professional Promise
The University of Tennessee, Knoxville , April, 2008

JINS Neutron Fellowship
The University of Tennessee, Knoxville, Feb, 2008​