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Search Publications by: Jeffrey W Lynn (Fed)

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Displaying 126 - 150 of 289

Complex Magnetic Incommensurability and Electronic Charge Transfer through the Ferroelectric Transition in Multiferroic Co 3 TeO 6

July 25, 2017
Author(s)
Chi-Hung Lee, Chin-Wei Wang, Yang Zhao, Wen-Hsien Li, Jeffrey W. Lynn, A. Brooks Harris, Kirrily Rule, Hung-Duen Yang, Helmuth Berger
Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co 3TeO 6. As the temperature is lowered: below T M1 = 26 K long range order develops, which is fully

Quantum Critical Point in the Sc-Doped Itinerant Antiferromagnet TiAu

June 14, 2017
Author(s)
E. Svanidze, T. Besara, J. K. Wang, D. Geiger, L. Prochaska, J. M. Santiago, Jeffrey W. Lynn, S. Paschen, E. Morosan
We present the first experimental realization of a quantum critical point in an itinerant antiferromagnetic realization of a quantum critical point in an intinerant antiferromagnet composed of non-magnetic constituents, TiAu. By partially substituting Ti

Phase Diagram of a-RuCl 3 in an In-Plane Magnetic Field

May 31, 2017
Author(s)
J. A. Sears, Yang Zhao, Zhijun Xu, Jeffrey W. Lynn, Young-June Kim
The low-temperature magnetic phases in the layered honeycomb lattice material α-RuCl 3 have been studied as a function of in-plane magnetic field. In zero field this material orders magnetically below 7 K with so-called zigzag order within the honeycomb

Spin Excitations and the Fermi Surface of Superconducting FeS

March 10, 2017
Author(s)
Haoran Man, Jiangang Guo, Rui Zhang, Rico U. Schonemann, Zhiping Yin, Mingxuan Fu, Matthew B. Stone, Qingzhen Huang, Yu Song, Weiyi Wang, David J. Singh, Felix Lochner, Tillman Hickel, Ilya Eremin, Leland Harriger, Jeffrey W. Lynn, Collin L. Broholm, Luis Balicas, Qimiao Si, Pengcheng Dai

Uniaxial Pressure Effect on the Magnetic Ordered Moment and Transition Temperatures in BaFe 2-x T x As 2 (T=Co,Ni)

February 17, 2017
Author(s)
David W. Tam, Yu Song, Haoran Man, Sky C. Cheung, Zhiping Yin, Xingye Lu, Weiyi Wang, Benjamin A. Frandsen, Lian Liu, Zizhou Gong, Takashi U. Ito, Yipeng Cai, Murray N. Wilson, Shengli Guo, Keisuke Koshiishi, Wei Tian, Bassam Hitti, Alexandre Ivanov, Yang Zhao, Jeffrey W. Lynn, Graeme M. Luke, Tom Berlijn, Thomas A. Maier, Yasutomo J. Uemura, Pengcheng Dai
We use neutron diffraction and muon spin relaxation to study the effect of uniaxial pressure on the paramagnetic-to-antiferromagnetic phase transition (T N) in BaFe 2As 2 and superconducting BaFe 1.915Ni 0.085As 2. In a local moment picture, the uniaxial

Floating Zone Growth of a-Na 0.90 MnO 2 Single Crystals

December 16, 2016
Author(s)
Rebecca Dally, Raphaele Clement, Robin Chisnell, Stephanie Taylor, Megan Butala, Vicky Doan-Nguyen, Mahalingam Balasubramanian, Jeffrey W. Lynn, Clare P. Grey, Stephen D. Wilson
Single crystal growth of α-Na xMnO 2 (x=0.90) is reported via the floating zone technique. The conditions required for stable growth and intergrowth-free crystals are described along with the results of trials under alternate growth atmospheres. Chemical

Large Anomalous Hall Effect in a Half-Heusler Antiferromagnet

December 1, 2016
Author(s)
T. Suzuki, Robin Michael Daub Chisnell, A. Devarakonda, Y.-T. Liu, W. Feng, D. Xiao, Jeffrey W. Lynn, J. G. Checkelsky
The quantum mechanical (Berry) phase of the electronic wavefunction has profound effects on spin-dependent behavior in solids [2,2]. In the context of electronic transport, the Berry phase plays a critical role as a fundamental origin of the anomalous [3,4

Distinct Magnetic Spectra in the Hidden Order and Antiferromagnetic Phases in URu 2-x Fe x Si 2

November 7, 2016
Author(s)
Nicholas P. Butch, Sheng Ran, Inho Jeon, Noravee Kanchanavatee, Kevin Huang, Alexander Breindel, M. Brian Maple, Ryan L. Stillwell, Yang Zhao, Leland Weldon Harriger, Jeffrey W. Lynn
We use neutron scattering to compare the magnetic excitations in the hidden order (HO) and antiferromagnetic (AFM) phases in URu 2-xFe xFe xSi 2 as a function of Fe concentration. The magnetic excitation spectra change significantly between x=0.05 and x=0

Giant Electromechanical Coupling of Relaxor Ferroelectric Controlled by Polar Nanoregion Dynamics

September 16, 2016
Author(s)
Michael E. Manley, Douglas L. Abernathy, Raffi Sahul, Daniel E. Parshall, Jeffrey W. Lynn, Andrew D. Christianson, Paul J. Stonaha, Eliot D. Specht, John D. Budai
Ferroelectric relaxors are inhomogeneous materials prized for their giant electromechanical coupling, which has revolutionized sensor and ultrasound applications, but is not well understood. It has been attributed to critical points in the phase diagram

Quadrupole Order in the Frustrated Pyrochlore Tb 2+x Ti 2-x O 7+y

May 26, 2016
Author(s)
H. Takatsu, S. Onoda, S. Kittaka, A. Kasahara, Y. Kono, T. Sakakibara, Y. Kato, B. Fak, J. Ollivier, Jeffrey W. Lynn, T. Taniguchi, H. Kadowaki
A hidden order that emerges in the frustrated pyrochlore Tb 2+xTi 2-xO 7+y with X = 0.005 > x c is studied from specific heat and magnetization experiments on a high-quality single crystal, as well as neutron scattering. Semi-quantitative3 analyses based