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Search Publications by: Jeffrey W Lynn (Assoc)

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Displaying 51 - 75 of 160

Observation of Plasmon-Phonons in a Metamaterial Superconductor using Inelastic Neutron Scattering

July 24, 2019
Author(s)
Vera N. Smolyaninova, Jeffrey W. Lynn, Nicholas Butch, Heather H. Chen-Mayer, Joseph C. Prestigiacomo, M. S. Osofsky, Igor I. Smolyaninov
Recent experiments have demonstrated that the metamaterial approach is capable of drastically increasing the critical temperature, T c, of composite metal-dielectric epsilon near zero (ENZ) metamaterial superconductors. For example, a tripling of the

Singular Angular Magnetoresistance in a Magnetic Nodal Semimetal

June 26, 2019
Author(s)
T. Suzuki, L. Savary, J.-P. Liu, Jeffrey W. Lynn, L. Balents, J. G. Checkelsky
Transport coefficients are incisive experimental probes of the low energy, long wavelength properties of correlated electron systems often useful for mapping hidden phases with distinct symmetries. Here we report a new transport signature of spontaneous

Coexistence of Ferromagnetic and Stripe-Type Antiferromagnetic Spin Fluctuations in YFe 2 Ge 2

May 31, 2019
Author(s)
Hongliang Wo, Qisi Wang, Yao Shen, Xiaowen Zhang, Yiqing Hao, Yu Feng, Shoudong Shen, Zheng He, Bingying Pan, Wenbin Wang, K. Nakajima, S. Ohira-Kawamura, P. Steffens, M. Boehm, K. Schmalzl, T. R. Forrest, M. Matsuda, Yang Zhao, Jeffrey W. Lynn, Zhiping Yin, Jun Zhao
We report neutron scattering measurments of single-crystalline YFe 2Ge 2 in the normal state, which has the same crystal structure to the 122 family of iron pnictide superconductors. YFe 2Ge 2 does not exhibit long range magnetic order, but exhibits strong

Magnetic Order Effects on the Electronic Structure of KMMnSd2^ (M=Cu,Li) with the ThCr 2 Si 2 -Type Structure

April 30, 2019
Author(s)
Austin Virtue, Xiuquan Zhou, Brandon Wilfong, Jeffrey W. Lynn, Keith Taddei, Peter Zavalij, Limin Wang, Efrain E. Rodriguez
We propose three magnetic structures for KCuMnS^26 with the ThCr 2Si 2-type structure. Powder samples of KCuMnS 2 and KLiMnS 2 were prepared for structural studies and magnetization measurements. In both compounds, the Mn 2+ site is alloyed by either Cu +

Low-Carrier Density and Fragile Magnetism in a Kondo Lattice System

February 12, 2019
Author(s)
Binod K. Rai, Iain W. H. Oswald, Wenjing Ban, C.-L. Huang, V. Loganathan, A. M. Hallas, M. N. Wilson, G. M. Luke, Leland Harriger, Qingzhen Huang, Y. Li, Sami Dzsaber, Julia Y. Chan, N. L. Wang, Silke Paschen, Jeffrey W. Lynn, Andriy H. Nevidomskyy, Pengcheng Dai, Q. Si, E. Morosan
Known low carrier Kondo systems evolve from metallic non-magnetic analogues, while a recent theoretical model for the dilute carrier Kondo limit predicts semimetallic behavior. Very few 4f low carrier Kondo systems have been reported, mostly based on Ce

High Temperature Singlet-Based Magnetism from Hund's Rule Correlations

February 7, 2019
Author(s)
Lin Miao, Rourav Basak, Sheng NMN Ran, Yishuai Xu, Erica Kotta, Haowei He, Jonathan D. Denlinger, Yi-De Chuang, Yang Zhao, Zhijun Xu, Jeffrey W. Lynn, J. R. Jeffries, Shanta Ranjan Saha, Ioannis Giannakis, Pegor Aynajian, Chang-Jong Kang, Yilin Wang, Gabriel Kotliar, Nicholas Butch, L. Andrew Wray
Novel electronic phenomena frequently form in heavy fermions as a consequence of the mutual nature of localization and itineracy of f-electrons. On the magnetically ordered side of the heavy fermion phase diagram, f-moments are expected to be localized and

Spin Correlations of Quantum Spin Liquid and Quadrupole-Ordered States of Tb 2+x Ti 2-x O 7+y

January 7, 2019
Author(s)
Hiroaki Kadowaki, Mika Wakita, Bjorn Fak, Jacques Ollivier, Seiko Ohira-Kawamura, Kenji Nakajima, Jeffrey W. Lynn
Spin correlations of the frustrated pyrochlore oxide Tb 2+xTi 2-xO 7+y have been investigated by using inelastic neutron scattering on single crystalline samples (x = -0.007, 0.000, and 0.003), which have the putative quantum-spin-liquid (QSL) or electric

Spin Waves Across Three-Dimensional, Close-Packed Nanoparticles

December 21, 2018
Author(s)
Kathryn Krycka, James Jennings Rhyne, Samuel D Oberdick, Ahmed M. Abdelgawad, Julie A. Borchers, Yumi Ijiri, Sara A. Majetich, Jeffrey W. Lynn
Inelastic neutron scattering is utilized to measure the spin waves, or magnons, which arise from inter-particle coupling between 8.4 nm ferrite nanoparticles that are self-assembled into a close-packed lattice, yet physically separated by oleic acid

Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh 3 Si 7

December 13, 2018
Author(s)
Binod K. Rai, S. Chikara, Xiaxin Ding, Iain W. H. Oswald, R. Schonemann, V. Loganathan, A. M. Hallas, H. B. Cao, Macy Stavinoha, T. Chen, Haoran Man, Scott Carr, John Singleton, Vivien Zapf, Katherine A. Benavides, Julia Y. Chan, Q. R. Zhang, D. Rhodes, Y. C. Chiu, Luis Balicas, A. A. Aczel, Qingzhen Huang, Jeffrey W. Lynn, J. Gaudet, D. A. Sokolov, H. C. Walker, D. T. Adroja, Pengcheng Dai, Andriy H. Nevidomskyy, C.-L. Huang, E. Morosan
We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh 3Si 7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at Τ N = 7.5 K. Neutron diffraction

Super Charge Separation and High Voltage Phase in Na x MnO 2

December 12, 2018
Author(s)
Xi Chen, Yichao Wang, Kamila Wiaderek, Xiahan Sang, Olaf Borkiewicz, Karena Chapman, James LeBeau, Jeffrey W. Lynn, Xin Li
Na xMnO 2 shows Mnu3+^ and Mn^ 4+ charge separation with charge stripe ordering upon Na de-intercalation at x=5/8, similar to many colossal magnetoresistance materials. We show in this paper that, surprisingly, at lower Na compositions of 5/8 >x less than

Tuning the Magnetic Ground State of Ce 1-x Yb x RhIn 5 by Yb Valence Fluctuations

November 16, 2018
Author(s)
S. Jang, N. Pouse, T. Keiber, B. D. White, S. M. Disseler, Jeffrey W. Lynn, J. C. Collini, M. Janoschek, F. Bridges, M. B. Maple
We characterize the properties of Ce 1-xYb xRhIn 5 single crystals with 0 less than or equal to} x less than or equal to} 1 using measurements of powder x-ray diffraction (XRD), energy dispersive x-ray spectroscopy (EDS), electrical resistivity, magnetic

Suppression of Antiferromagnetic Spin Fluctuations in Superconducting Cr 0.8 Ru 0.2

October 25, 2018
Author(s)
M. Ramazanoglu, B. G. Ueland, D. K. Pratt, Leland Harriger, Jeffrey W. Lynn, G. Ehlers, G. E. Granroth, S. L. Bud'Ko, P. C. Canfield, D. Schlagel, A. I. Goldman, T. A. Lograsso, R. J. McQueeney
Although the precise mechanism is under, unconventional superconductivity (SC) is linked to the pairing of electrons by itinerant antiferromagnetic (AFM) spin fluctuations. Thus, unconventional SC often develops in magnetic metals on the cusp of static AFM

Reversible Flat to Rippling Phase Transition in Fe Containing Layered Battery Electrode Materials

September 26, 2018
Author(s)
Xi Chen, Sooyeon Hwang, Robin Chisnell, Yichao Wang, Fan Wu, Sooran Kim, Jeffrey W. Lynn, Dong Su, Xin Li
The Jahn-Teller effect in solid-state chemistry relates the symmetry of electronic configuration to the atomic arrangement around the individual transition metal ion. The collective behavior of many such Jahn-Teller active entities is of great interest in

Amplitude Mode in the Planar Triangular Antiferromagnet Na 0.9 MnO 2

June 5, 2018
Author(s)
Rebecca L. Dally, Yang Zhao, Zhijun Xu, Robin Chisnell, M. B. Stone, Jeffrey W. Lynn, Leon Balents, Stephen D. Wilson
Amplitude modes that arise from continuous symmetry breaking in materials are of broad interest as condensed matter analogs of the Higgs boson in particle physics. These modes reflect an oscillation in the amplitude of a complex order parameter, yet they

Carrier Density Control of Magnetism and Berry Phases in Doped EuTiO 3

May 10, 2018
Author(s)
Kaveh Ahadi, Zhigang Gui, Zach Porter, Jeffrey W. Lynn, Zhijun Xu, Stephen D. Wilson, Anderson Janotti, Susanne Stemmer
In materials with broken time-reversal symmetry, the Berry curvature acts as a reciprocal space magnetic field on the conduction electrons and is significant contribution to the magnetotransport properties, including to the intrinsic anomalous Hall effect

Band Jahn-Teller Structural Phase Transition in Y 2 In

February 23, 2018
Author(s)
E. Svanidze, C. Georgen, Qingzhen Huang, J. M. Santiago, Jeffrey W. Lynn, E. Morosan
The number of paramagnetic materials that undergo a structural phase transition is rather small, which ca perhaps explain the limited understanding of the band Jahn-Teller mechanism responsible for the effect. Here we present a structural phase transition

Noncentrosymmetric Superconductor BeAu

January 4, 2018
Author(s)
A. Amon, E. Svanidze, R. Cardoso-Gil, M. N. Wilson, H. Rosner, M. Bobnar, W. Schnelle, Jeffrey W. Lynn, R. Gumeniuk, C. Hennig, G. M. Luke, H. Borrmann, A. Leithe-Jasper, Yu Grin
In noncentrosymmetric superconductors mixed spin-singlet and spin-triplet pairing can occur. In this work, physical properties of the noncentrosymmetric superconductor, BeAu, were investigated. It was established that BeAu undergoes a structural phase

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
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