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Search Publications by: Collin L. Broholm (Assoc)

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Displaying 26 - 50 of 66

Homogeneous Reduced Moment in a Gapful Scalar Chiral Kagome Antiferromagnet

July 12, 2019
Author(s)
A. Scheie, S. Dasgupta, M. Sanders, A. Sakai, Y. Matsumoto, Timothy R Prisk, S. Nakatsuji, R. J. Cava, Collin L. Broholm
We present a quantitative experimental investigation of the scalar chiral magnetic order with in Nd 3Sb 3Mg 2O 14. Static magnetization reveals a net ferromagnetic ground state, and inelastic neutron scattering from the hyperfine coupled nuclear spin

Anisotropic Spin Fluctuations in Detwinned FeSe

July 1, 2019
Author(s)
Tong Chen, Youzhe Chen, Andreas Kreisel, Xingye Lu, Astrid Schneidewind, Yiming Qiu, J. T. Park, Toby G. Perring, J. Ross Stewart, Huibo Cao, Rui Zhang, Yu Li, Yan Rong, Yuan Wei, Brian M. Andersen, P. J. Hirschfeld, Collin L. Broholm, Pengcheng Dai
Superconductivity in iron selenide (FeSe) emerges from a nematic phase that breaks four-fold rotational symmetry in the iron plane [Fig. 1(a)] [1-4]. Although this phase in FeSe is established below a tetragonal-to-orthorhombic transition temperature Τ s

Incommensurate Magnetism near Quantum Criticality in CeNiAsO

May 15, 2019
Author(s)
Shan Wu, W. A. Phelan, L. Liu, J. R. Morey, J. A. Tutmaher, J. C. Neuefeind, Ashfia Huq, Matthew B. Stone, M. Feygenson, David W. Tam, Benjamin A. Frandsen, Benjamin Trump, Cheng Wan, S. R. Dunsiger, Tyrel M. McQueen, Y. J. Uemura, Collin L. Broholm

Continuum of Quantum Fluctuations in a Three-Dimensional S = 1 Heisenberg Magnet

January 1, 2019
Author(s)
K. W. Plumb, Hitesh J. Changlani, A. Scheie, Shu Zhang, J. W. Krizan, Jose Rodriguez Rivera, Yiming Qiu, B. Winn, R. J. Cava, Collin L. Broholm
Spin liquids are a fundamentally new phase of matter that cannot be described by a broken symmetry and have no order parameter. While the quantum entanglement that characterizes a quantum spin liquid is not directly accessible to any current measurement

Screened Moments and Extrinsic In-Gap States in Samarium Hexaboride

April 18, 2018
Author(s)
W. T. Fuhrman, J. R. Chamorro, P. A. Alekseev, J.-M. Mignot, T. Keller, Jose Rodriguez Rivera, Yiming Qiu, P. Nikolic, T. M. McQueen, Collin L. Broholm
The Kondo impurity effect in metals is the result of quantum-mechanical scattering of conduction electrons by magnetic impurities. 1 This process leads to exotic effects such as unconventional superconductivity and an effective electron mass enhanced by 2

Reentrant Phase Diagram of Yb 2 Ti 2 O 7 in a [111] Magnetic Field

September 22, 2017
Author(s)
A. Scheie, J. Kindervater, S. Saubert, C. Duvinage, C. Pfleiderer, H. J. Changlani, S. Zhang, Leland Harriger, K. Arpino, S. M. Koohpayeh, Collin L. Broholm
We present a phase diagram of rare-earth pyrochlore Yb 2Ti 2O 7 in a (111) magnetic field. Using heat capacity, magnetization, and neutron scattering data, we show an unusual field-dependence of a first-order phase boundary, wherein a small applied field

Gapped Excitations in the High-Pressure Antiferromagnetic Phase of URu 2 Si 2

May 31, 2017
Author(s)
T. J. Williams, H. Barath, Z. Yamani, Jose Rodriguez Rivera, Juscelino Leao, J. D. Garrett, G. M. Luke, W.J. L. Buyers, Collin L. Broholm
We report a neutron scattering study of the magnetic excitation spectrum in each of the three temperature and pressure phases of URu 2Si 2. We find qualitatively similar excitations throughout the (H0L)scattering plane in the hidden order and large moment

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

Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr 2 Zr 2 O 7

March 8, 2017
Author(s)
J.-J. Wen, S.M. Koohpayeh, K. A. Ross, B. A. Trump, T. M. McQueen, K. Kimura, S. Nakatsuji, Yiming Qiu, D. M. Pajerowski, John R. Copley, Collin L. Broholm
Inelastic neutron scattering reveals a broad continuum of excitations in Pr 2Zr 2O 7, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ}) acting on the non-Kramers Pr 3+ crystal

Modulated Magnetism and Anomalous Electronic Transport in Ce 3 Cu 4 As 4 O 2

August 29, 2016
Author(s)
Jiakui K. Wang, Shan Wu, Yiming Qiu, Jose Rodriguez Rivera, Qingzhen Huang, Collin L. Broholm, E. Morosan
The complex magnetism and transport properties of tetragonal Ce 3Cu 4As 4O 2 were examined through neutron scattering and physical properties measurements on polycrystalline samples. The lamellar structure consists of alternating layers of CeCu 4As 4 with

Modulated Magnetism and Anomalous Electronic Transport in Ce 3 Cu 4 As 4 O 2

August 29, 2016
Author(s)
Jiakui K. Wang, Shan Wu, Yiming Qiu, Jose Rodriguez Rivera, Qingzhen Huang, Collin L. Broholm, E. Morosan
The complex magnetism and transport properties of tetragonal Ce 3Cu 4As 4O 2 were examined through neutron scattering and physical properties measurements on polycrystalline samples. We find a lamellar structure consisting of alternating layers of CeCu 4As

Effective Spin-1/2 Scalar Chiral Order on Kagome Lattices in Nd 3 Sb 3 Mg 2 O 14

May 20, 2016
Author(s)
A. Scheie, M. Sanders, J. Krizan, Yiming Qiu, R. J. Cava, Collin L. Broholm
We introduce Nd 3Sb 3Mg 2O 14 with ideal kagome lattices of neodymium ions in ABC stacking. Thermodynamic measurements show a Curie-Weiss temperature of θ cw = -0.12 Jm a Bd 3+ spin 1/2 Kramers doublet ground state, and as second order phase transition at