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Publications (23)

cond-mat.str-el2014

Large Negative Quantum Renormalization of Excitation Energies in the Spin-1/2 Kagome Lattice Antiferromagnet Cs $_{2}$ Cu $_{3}$ SnF $_{12}$

T. Ono, K. Matan, Y. Nambu +4

Magnetic excitations in the spin- $\frac{1}{2}$ distorted kagome lattice antiferromagnet Cs $_{2}$ Cu $_{3}$ SnF $_{12}$ , which has an ordered ground state owing to the strong Dzyaloshinskii…

cond-mat.str-el2017

Nonreciprocal magnons and symmetry-breaking in the noncentrosymmetric antiferromagnet

G. Gitgeatpong, Y. Zhao, P. Piyawongwatthana +5

Magnons, the spin-wave quanta, are disturbances that embody a wave propagating through a background medium formed by ordered magnetic moments. In an isotropic Heisenberg system, th…

cond-mat.supr-con2010

Doping Dependence of Spin Dynamics in Electron-Doped Ba(Fe1-xCox)2As2

K. Matan, S. Ibuka, R. Morinaga +5

The spin dynamics in single crystal, electron-doped Ba(Fe1-xCox)2As2 has been investigated by inelastic neutron scattering over the full range from undoped to the overdoped regime.…

cond-mat.str-el2013

Ghost modes and continuum scattering in the dimerized distorted kagome lattice antiferromagnet Rb $_{2}$ Cu $_{3}$ SnF $_{12}$

K. Matan, Y. Nambu, Y. Zhao +7

High intensity pulsed neutron scattering reveals a new set of magnetic excitations in the pinwheel valence bond solid state of the distorted kagome lattice antiferromagnet Rb $_{2}$ Cu…

cond-mat.str-el2010

Pinwheel VBS state and triplet excitations in the two-dimensional deformed kagome lattice

K. Matan, T. Ono, Y. Fukumoto +5

Determining ground states of correlated electron systems is fundamental to understanding novel phenomena in condensed matter physics. A difficulty, however, arises in a geometrical…

cond-mat.str-el2006

Spin waves in the Frustrated Kagome Lattice Antiferromagnet KFe3(OH)6(SO4)2

K. Matan, D. Grohol, D. G. Nocera +5

The spin wave excitations of the ideal S=5/2 Kagome lattice antiferromagnet KFe3(OH)6(SO4)2 have been measured using high-resolution inelastic neutron scattering. We directly obser…

cond-mat.str-el2007

Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2

J. S. Helton, K. Matan, M. P. Shores +9

We have performed thermodynamic and neutron scattering measurements on the S=1/2 kagome lattice antiferromagnet Zn Cu_3 (OH)_6 Cl_2. The susceptibility indicates a Curie-Weiss temp…

cond-mat.str-el2005

Spin chirality on a two-dimensional frustrated lattice

D. Grohol, K. Matan, J. H. Cho +4

The collective behavior of interacting magnetic moments can be strongly influenced by the topology of the underlying lattice. In geometrically frustrated spin systems, interesting…

cond-mat.mtrl-sci2017

Sodium layer chiral distribution and spin structure of Na $_{2}$ Ni $_{2}$ TeO $_{6}$ with a honeycomb network

Sunil K. Karna, Y. Zhao, R. Sankar +7

The nature of Na ion distribution, diffusion path, and the spin structure of $P 2$ -type Na $_{2}$ Ni $_{2}$ TeO $_{6}$ with a Ni honeycomb network has been explored. The nuclear density distri…

cond-mat.str-el2003

Thermodynamic and Transport Measurements on Superconducting Na_xCoO_2 + yH_2O Single Crystals Prepared by Electrochemical De-intercalation

F. C. Chou, J. H. Cho, Patrick A. Lee +3

Superconducting single crystal samples of Na_xCoO_2 + yH_2O have been produced using an electrochemical technique which dispenses with the usual bromine chemical de-intercalation s…

cond-mat.str-el2009

Anisotropic itinerant magnetism and spin fluctuations in BaFe2As2: A neutron scattering study

K. Matan, R. Morinaga, K. Iida +1

Neutron scattering measurements were performed to investigate magnetic excitations in a single-crystal sample of the ternary iron arsenide BaFe2As2, a parent compound of a recently…

cond-mat.str-el2009

Polarized neutron scattering studies of the kagome lattice antiferromagnet KFe3(OH)6(SO4)2

K. Matan, J. S. Helton, D. Grohol +4

We report polarized neutron scattering studies of spin-wave excitations and spin fluctuations in the S=5/2 kagome lattice antiferromagnet KFe3(OH)6(SO4)2 (jarosite). Inelastic pola…

cond-mat.mtrl-sci2017

Spin Seebeck effect in a polar antiferromagnet $I^\pm$ -Cu $_{2}$ V $_{2}$ O $_{7}$

Y. Shiomi, R. Takashima, D. Okuyama +5

We have studied the longitudinal spin Seebeck effect in a polar antiferromagnet $I^\pm$ -Cu $_{2}$ V $_{2}$ O $_{7}$ in contact with a Pt film. Below the antiferromagnetic transition temper…

cond-mat.str-el2022

Magnetic structure and spin dynamics of the quasi-2D antiferromagnet Zn-doped copper pyrovanadate

G. Gitgeatpong, Y. Zhao, J. A. Fernandez-Baca +6

Magnetic properties of the antiferromagnet Zn $_{0.15}$ Cu $_{1.85}$ V $_{2}$ O $_{7}$ (ZnCVO) have been thoroughly investigated on powder and single-crystal samples. The crystal structure de…

cond-mat.str-el2017

High-field magnetization and magnetic phase diagram of $I^\pm$ -Cu $_{2}$ V $_{2}$ O $_{7}$

G. Gitgeatpong, M. Suewattana, Shiwei Zhang +7

High-field magnetization of the spin- $1/2$ antiferromagnet $I^\pm$ -Cu $_{2}$ V $_{2}$ O $_{7}$ was measured in pulsed magnetic fields of up to 56 T in order to study its magnetic phase diagram.…

cond-mat.str-el2011

Dzyaloshinskii-Moriya interaction and spin re-orientation transition in the frustrated kagome lattice antiferromagnet

K. Matan, B. M. Bartlett, J. S. Helton +10

Magnetization, specific heat, and neutron scattering measurements were performed to study a magnetic transition in jarosite, a spin-5/2 kagome lattice antiferromagnet. When a magne…

cond-mat.str-el2015

Magnetic structure and Dzyaloshinskii-Moriya interaction in the $S = 1/2$ helical-honeycomb antiferromagnet $I^\pm$ -Cu $_{2}$ V $_{2}$ O $_{7}$

G. Gitgeatpong, Y. Zhao, M. Avdeev +3

Magnetic properties of the $S = 1/2$ antiferromagnet $I^\pm$ -Cu $_{2}$ V $_{2}$ O $_{7}$ have been studied using magnetization, Quantum Monte Carlo (QMC) simulations, and neutron diffracti…

cond-mat.str-el2010

Dynamic Scaling in the Susceptibility of the Spin-1\2 Kagome Lattice Antiferromagnet Herbertsmithite

J. S. Helton, K. Matan, M. P. Shores +5

The spin-1/2 kagome lattice antiferromagnet herbertsmithite, ZnCu $_{3}$ (OH) $_{6}$ Cl $_{2}$ , is a candidate material for a quantum spin liquid ground state. We show that the magnetic…

cond-mat.str-el2021

Magnetic structure and high-field magnetization of the distorted kagome lattice antiferromagnet Cs $_{2}$ Cu $_{3}$ SnF $_{12}$

K. Matan, T. Ono, G. Gitgeatpong +12

High-resolution time-of-flight powder neutron diffraction and high-field magnetization were measured to investigate the magnetic structure and existence of a field-induced magnetic…

cond-mat.str-el2022

Breakdown of Linear Spin-wave Theory and Existence of Spinon Bound States in the Frustrated Kagome Lattice Antiferromagnet

K. Matan, T. Ono, S. Ohira-Kawamura +3

Spin dynamics of the spin-1/2 kagome lattice antiferromagnet Cs $_{2}$ Cu $_{3}$ SnF $_{12}$ was studied using high-resolution, time-of-flight inelastic neutron scattering. The flat mode, a…

cond-mat.str-el2020

Magnetic properties and magnetic structure of the frustrated quasi-one-dimensional antiferromagnet SrCuTe $_{2}$ O $_{6}$

P. Saeaun, Y. Zhao, P. Piyawongwatthana +5

Magnetization measurements on single-crystal cubic SrCuTe $_{2}$ O $_{6}$ with an applied magnetic field of along three inequivalent high symmetry directions $[100]$ , $[110]$ , and $[111]$ …

cond-mat.str-el2026

Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu $_{5}$ SbO $_{6}$

C. Piyakulworawat, K. Morita, Y. Fukumoto +9

We analyze powder-averaged inelastic neutron scattering and magnetization data for the distorted honeycomb compound Cu $_{5}$ SbO $_{6}$ using a first-order dimer expansion calculation an…

cond-mat.str-el2007

X-ray Scattering Study of the spin-Peierls transition and soft phonon behavior in TiOCl

E. T. Abel, K. Matan, F. C. Chou +5

We have studied the S=1/2 quasi-one-dimensional antiferromagnet TiOCl using single crystal x-ray diffraction and inelastic x-ray scattering techniques. The Ti ions form staggered s…