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Publications (10)

cond-mat.str-el2020

Terahertz Magneto-optical investigation of quadrupolar spin-lattice effects in magnetically frustrated Tb2Ti2O7

K. Amelin, Y. Alexanian, U. Nagel +9

The significance of spin-lattice coupling in the phase diagram of the quantum spin-icepyrochlore Tb2Ti2O7 has been a topic of debate for some time. Here, we focus on the aspect of…

cond-mat.mtrl-sci2024

The effect of local distortions on magnetic and magnetoelectric properties of paramagnetic Pr3Ga5SiO14 langasite

A. Tikhanovskii, V. Yu. Ivanov, A. Kuzmenko +3

Magnetic field-induced electric polarization has been observed in trigonal non-centrosymmetric paramagnetic Pr3Ga5SiO14 langasite. We detected quadratic electric polarization along…

cond-mat.mtrl-sci2020

Unusual magnetoelectric effect in paramagnetic rare-earth langasite

L. Weymann, L. Bergen, Th. Kain +13

Violation of time reversal and spatial inversion symmetries has profound consequences for elementary particles and cosmology. Spontaneous breaking of these symmetries at phase tran…

cond-mat.str-el2019

Effects of Ca substitution on quasi-acoustic sliding modes in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$

E. Constable, A. D. Squires, J. Horvat +8

The low energy lattice dynamics of the quasi-periodic spin-ladder cuprate Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$ are investigated using terahertz frequency synchrotron radiation. A hig…

cond-mat.mtrl-sci2012

Infrared phonon anomaly and magnetic excitations in single-crystal Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl

K. H. Miller, P. W. Stephens, C. Martin +5

Infrared reflection and transmission as a function of temperature have been measured on single crystals of Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl. The complex dielectric function and…

cond-mat.str-el2018

Field-induced double spin spiral in a frustrated chiral magnet

M. Ramakrishnan, E. Constable, A. Cano +14

We report the direct observation of a magnetic-feld induced long-wavelength spin spiral modulation in the chiral compound Ba3TaFe3Si2O14. This new spin texture emerges out of a chi…

cond-mat.mtrl-sci2024

Resolving the local distortions of Ising-like moments in magnetoelectric Ho-doped langasite

A. Yu. Tikhanovskii, V. Yu. Ivanov, A. M. Kuzmenko +9

The magnetic properties of Ho-doped langasites (La:Ho) $_{3}$ Ga $_{5}$ SiO $_{14}$ are dominated by the Ising-like magnetic moments of the Ho $^{3 +}$ ions. In their saturated regime, the in…

cond-mat.mtrl-sci2011

Proceedings of the 35th Annual Australian/New Zealand Condensed Matter and Materials Meeting

K. Radhanpura, S. Hargreaves, R. A. Lewis +42

The 35th Australian/New Zealand Annual Condensed Matter and Materials Meeting was held at the Charles Sturt University campus in Wagga Wagga, NSW, Australia from the 1st to the 4th…

cond-mat.mtrl-sci2017

Magnetic and dielectric order in the kagome-like francisite Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl

E. Constable, S. Raymond, S. Petit +8

We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl, complemented by dielectric and electric…

cond-mat.mtrl-sci2017

Double Vibronic process in the quantum spin ice candidate Tb $_{2}$ Ti $_{2}$ O $_{7}$ revealed by terahertz spectroscopy

E. Constable, R. Ballou, J. Robert +8

The origin of quantum fluctuations responsible for the spin liquid state in Tb $_{2}$ Ti $_{2}$ O $_{7}$ has remained a long standing problem. By synchrotron-based terahertz measurements, we…