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Search Publications by: Yang Zhao (Assoc)

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Displaying 1 - 25 of 53

Magnetic Ground State of the Kitaev Na 2 Co 2 TeO 6 Spin Liquid Candidate

June 2, 2023
Weiliang Yao, Yang Zhao, Yiming Qiu, Christian Balz, Ross Stewart, Jeffrey Lynn, Yuan Li
As a candidate Kitaev material, Na 2Co 2TeO 6 exhibits intriguing magnetism on a honeycomb lattice that is believed to be C 3-symmetric. Here we report a neutron diffraction study of its high-quality single crystals under a-axis magnetic fields. While

Spin-orbital order and excitons in magnetoresistive HoBi

March 22, 2023
Jonathan N. Gaudet, H. Yang, E. Smith, T. Halloran, J. Clancy, Jose Rodriguez Rivera, Guangyong Xu, Yang Zhao, Wangchun Chen, G. Sala, Adam A. Aczel, B. Gaulin, Fazel Tafti, Collin L. Broholm
The magnetism of the rock-salt fcc rare-earth monopnictide HoBi, a candidate topological material with extreme magnetoresistance, is investigated. From the Ho3+ non-Kramers J=8 spin-orbital multiplet, the cubic crystal electric field yields six near

Frustrated Magnetic Interactions and Quenched Spin Fluctuations in CrAs

November 1, 2022
Yayuan Qin, Yao Shen, Yiqing Hao, Hongliang Wo, Shoudong Shen, Russell A. Ewings, Yang Zhao, Leland Harriger, Jeffrey Lynn, Jun Zhao
The discovery of pressure-induced superconductivity in helimagnets (CrAs, MnP) has attracted significant interest in understanding the relationship between complex magnetism and unconventional superconductivity. However, the nature of the magnetism and

Phase Diagram of YbZnGaO 4 in Applied Magnetic Field

September 15, 2021
William Steinhardt, P. A. Maksimov, Sachith Dissanayake, Zhenzhong Shi, Nicholas Butch, David Graf, Andrey Podlesnyak, Yaohua Liu, Yang Zhao, Guangyong Xu, Jeffrey Lynn, Casey Marjerrison, A. L. Chernyshev, Sara Haravifard
Recently, Yb-based triangular lattice antiferromagnets have garnered significant interest as possible quantum spin liquid candidates. One example is YbMgGaO 4, which showed many promising spin liquid features, but also possesses a high degree of disorder

Weyl-mediated helical magnetism in NdAlSi

August 19, 2021
Jonathan Gaudet, Hung-Yu Yang, Santu Baidya, Baozhu Lu, Guangyong Xu, Yang Zhao, Jose Rodriguez Rivera, Christina M. Hoffman, David E. Graf, Darius H. Torchinsky, Predrag Nikolic, David Vanderbilt, Fazel Tafti, Collin L. Broholm
Emergent relativistic quasiparticles in Weyl semimetals are the source of exotic electronic properties such as surface Fermi arcs, the anomalous Hall effect and negative magnetoresistance, all observed in real materials. Whereas these phenomena highlight

Noncollinear Ferromagnetic Weyl Semimetal with Anisotropic Anomalous Hall Effect

March 24, 2021
Hung-Yu Yang, Bahadur Singh, Jonathan Gaudet, Baozhu Lu, Cheng-Yi Huang, Wei-Chi Chiu, Shin-Ming Huang, Baokai Wang, Faranak Bahrami, Bochao Xu, Jacob Franklin, Ilya Sochnikov, David Graf, Guangyong Xu, Yang Zhao, Christina Hoffman, Hsin Lin, Darius Torchinsky, Collin L. Broholm, Arun Bansil, Fazel Tafti

Field-Tuned Magnetic Structure and Phase Diagram of the Honeycomb Magnet YbCl 3

March 1, 2021
Yiqing Hao, Hongliang Wo, Yimeng Gu, Xiaowen Zhang, YiQing Gu, ShiYi Zheng, Yang Zhao, Guangyong Xu, Jeffrey W. Lynn, Naoki Murai, Wenbin Wang, Jun Zhao
We report thermodynamic and neutron diffraction measurements on the magnetic ordering properties of the honeycomb lattice magnet YbCl 3. We find YbCl 3 exhibits a Neel type long-range magnetic order at the wavevector (0,0,0) below T N = 600 mK. This

Magnetic Order and Competition with Superconductivity in (Ho-Er)Ni 2 B 2 C

November 20, 2020
Suleyman Gundogdu, J. P. Clancy, Guangyong Xu, Yang Zhao, Paul A. Dube, Tufan C. Karalar, Beong K. Cho, Jeffrey W. Lynn, M. Ramazanoglu
The rare earth magnetic order in pure and doped Er (1−x)Ho xNi 2B^2^C (x = 0, 0.25, 0.50, 0.75, 1) single crystal samples was investigated using magnetization and neutron diffraction measurements. Superconducting quaternary borocarbides, RNi 2B 2C where R

In-plane Uniaxial Pressure-Induced Out-of-Plane Antiferromagnetic Moment and Critical Fluctuations in BaFe 2 As 2

November 12, 2020
Panpan Liu, Mason L. Klemm, Long Tian, Xingye Lu, Yu Song, David W. Tam, Karin Schmalzl, J. T. Park, Yu Li, Guotai Tan, Yixi Su, Frederic Bourdarot, Yang Zhao, Jeffrey W. Lynn, Robert J. Birgeneau, Pengcheng Dai
A small in-plane external uniaxial pressure has been widely used as an effective method to acquire single domain iron pnictide BaFe 2As 2, which exhibits twin-domains without uniaxial strain below the tetragonal-to-orthorhombic structural (nematic)

Antichiral Spin Order, its Soft Modes, and their Hybridization with Phonons in the Topological Semimetal Mn 3 Ge

August 3, 2020
Y. Chen, Jonathan Gaudet, S. Dasgupta, G. G. Marcus, J. Lin, T. Chen, T. Tomita, M. Ikhlas, Yang Zhao, Wangchun Chen, Matthew B. Stone, O. Tchernyshyov, S. Nakatsuji, Collin L. Broholm
Quantum materials with strong transport responses to disparate physical quantities are of great fundamental significance and may hold technological potentials. The interplay between interactions and topology drive such responses through the effects of

Topological Singularity Induced Chiral Kohn Anomaly in a Weyl Semimetal

June 11, 2020
Thanh Nguyen, Fei Han, Nina Andrejevic, Ricardo Pablo-Pedro, Anju Apte, Yoichiro Tsurimaki, Zhiwei Ding, Kunyan Zhang, Ahmet Alatas, Ercan E. Alp, Songxue Chi, Jaime Fernandez-Baca, Masaaki Matsuda, David Alan Tennant, Yang Zhao, Zhijun Xu, Jeffrey W. Lynn, Shengxi Huang, Mingda Li
The electron-phonon interaction (EPI) is instrumental in a wide variety of phenomena in solid state physics, such as electrical resistivity in metals [1], carrier mobility, optical transition and polaron effects in semiconductors [2,3], lifetime of hot

Correlating Magnetic Structure and Magnetotransport in Semimetal Thin Films of Eu 1-x Sm x TiO 3

May 15, 2020
Zach Porter, Ryan F. Need, Kaveh Ahadi, Yang Zhao, Zhijun Xu, Brian Kirby, Jeffrey W. Lynn, Susanne Stemmer, Stephen D. Wilson
We report on the evolution of the average and depth-dependent magnetic order in thin film samples of biaxially stressed and electron-doped EuTiO 3 for samples across a doping range 20 cm −3. Under an applied in-plane magnetic field, the G-type

Materializing Rival Ground States in the Barlowite Family of Kagome Magnets: Quantum Spin Liquid, Spin Ordered, and Valence Bond Crystal States

April 14, 2020
Rebecca W. Smaha, Wei He, Jack Mingde Jiang, JiaJia Wen, Yi-Fan Jiang, John P. Sheckelton, Charles J. Titus, Suyin Grass Wang, Yu-Sheng Chen, Simon J. Teat, Adam A. Aczel, Yang Zhao, Guangyong Xu, Jeffrey W. Lynn, Hong-Chen Jiang, Young S. Lee
Quantum magnet display exotic phases that may be strongly influenced by small differences in structure and composition. Comprehensive structural and magnetic measurements (involving x-ray scattering, neutron scattering, and thermodynamic techniques) were

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

May 31, 2019
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

Quantum Critical Behavior in Ce(Fe 0.76 Ru 0.24 ) 2 Ge 2

May 7, 2019
Wouter Montfrooij, Tom Heitmann, Yiming Qiu, Shannon M. Watson, Ross Erwin, Wangchun Chen, Yang Zhao, Meigan Aronson, Yingkai Huang, Anne de Visser
Systems with embedded magnetic ions that exhibit a competition between magnetic order and disorder down to absolute zero can display unusual low temperature behaviors of the resistivity, hyperscaling behavior in which the relaxation back to equilibrium

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

February 7, 2019
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

Coexistence of Superconductivity and Short-Range Double-Stripe Spin Correlations in Te-Vapor Annealed FeTe 1-x Se x (X less than or equal to} 0.2)

June 14, 2018
Zhijun Xu, J. A. Schneeloch, Ming Yi, Yang Zhao, Masaaki Matsuda, D. M. Pajerowski, Songxue Chi, R. J. Birgeneau, Genda Gu, J. M. Tranquada, Guangyong Xu
In as-grown bulk crystals of Fe 1+yTe 1-xSe x with x less than or equal to} 0.3, excess Fe (y>0) is inevitable and correlates with a suppression of superconductivity. At the same time, there remains the question as to whether the character of the

Amplitude Mode in the Planar Triangular Antiferromagnet Na 0.9 MnO 2

June 5, 2018
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

Surprising Loss of Three-Dimensionality in Low-Energy Spin Correlations on Approaching Superconductivity in Fe 1+y Te 1-x Se x

October 6, 2017
Zhijun Xu, J. A. Schneeloch, Jinsheng Wen, B. L. Winn, G. E. Granroth, Yang Zhao, Genda Gu, I. Zaliznyak, J. M. Tranquada, R. J. Birgeneau, Guangyong Xu
We report inelastic neutron scattering measurements of low energy (hwapproximately less than} 10 meV) magnetic excitations in the "11" system Fe 1+yTe 1-xSe x. The spin correlations are two-dimensional (2D) in the superconducting samples at low temperature

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

July 25, 2017
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

Nonreciprocal Magnons and Symmetry-Breaking in the Noncentrosymmetric Antiffomagnet

July 24, 2017
G. Gitgeatpong, Yang Zhao, P. Piyawongwatthana, Yiming Qiu, Leland Harriger, Nicholas Butch, T. J. Sato, K. Matan
Magnons, the spin-wave quanta, are disturbances that embody a wave propagating through a back-ground medium formed by ordered magnetic moments. In an isotropic Heisenberg system, these disturbances vary in a continuous manner around an ordered spin

Successive Field-Induced Transitions in BiFeO 3 Around Room Temperature

July 21, 2017
Shiro Kawachi, Atsushi Miyake, Toshimitsu Ito, Sachith E. Dissanayake, Masaaki Matsuda, William D. Ratcliff, Yang Zhao, Shin Miyahara, Masashi Tokunaga
The Effects of high magnetic fields applied perpendicular to the spontaneous ferroelectric polarization on single crystals of BiFeO 3 were investigated through magnetization, magnetostriction, and neutron diffraction measurements. The magnetostriction