UNSW Sydney

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2011 · cond-mat.str-elShow all

15 papers · 2 filters

cond-mat.str-el2011★ 475 cited

Anisotropic conductance at improper ferroelectric domain walls

Dennis Meier, Jan Seidel, Andres Cano +6

Transition metal oxides hold great potential for the development of new device paradigms because of the field-tunable functionalities driven by their strong electronic correlations…

cond-mat.str-el2011★ 26 cited

High temperature series expansion study of the Heisenberg antiferromagnet on the hyperkagome lattice: Comparison with Na $_{4}$ Ir $_{3}$ O $_{8}$

R. R. P. Singh, J. Oitmaa

We develop high temperature series expansions for $ln Z$ and the uniform structure factor of the spin-half Heisenberg model on the hyperkagome lattice to order $β^{16}$ . These ex…

cond-mat.str-el2011★ 4 cited

High-order Ho multipoles in HoB2C2 observed with soft resonant x-ray diffraction

A. J. Princep, A. M. Mulders, E. Schierle +7

Soft resonant x-ray Bragg diffraction (SRXD) at the Ho M $_{4, 5}$ edges has been used to study Ho $4 f$ multipoles in the combined magnetic and orbitally ordered phase of HoB $_{2}$ C$_2…

cond-mat.str-el2011★ 35 cited

Ground state properties, excitation spectra and phase transitions in the $S = 1/2$ and $S = 3/2$ bilayer Heisenberg models on the honeycomb Lattice

J. Oitmaa, R. R. P. Singh

Motivated by the observation of a disordered spin ground state in the $S = 3/2$ material Bi $_{3}$ Mn $_{4}$ O $_{12}$ NO $_{3}$ , we study the ground state properties and excitation spectra of th…

cond-mat.str-el2011★ 16 cited

Universal Finite Temperature Properties of a Three Dimensional Quantum Antiferromagnet in the Vicinity of a Quantum Critical Point

J. Oitmaa, Y. Kulik, O. P. Sushkov

We consider a 3-dimensional quantum antiferromagnet which can be driven through a quantum critical point (QCP) by varying a tuning parameter g. Starting from the magnetically order…

cond-mat.str-el2011★ 26 cited

Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe2O4

A. M. Mulders, M. Bartkowiak, J. R. Hester +2

Neutron diffraction measurements on multiferroic LuFe2O4 show changes in the antiferromagnetic (AFM) structure characterized by wavevector q = (1/3 1/3 1/2) as a function of electr…

cond-mat.str-el2011★ 41 cited

Highly anisotropic anomaly in the dispersion of the copper-oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering

M. Raichle, D. Reznik, D. Lamago +8

Motivated by predictions of a substantial contribution of the "buckling" vibration of the CuO2 layers to d-wave superconductivity in the cuprates, we have performed an inelastic ne…

cond-mat.str-el2011★ 12 cited

ARPES Spectral Function in Lightly Doped and Antiferromagnetically Ordered YBa2Cu3O{6+y}

Wei Chen, Oleg P. Sushkov, Takami Tohyama

At doping below 6% the bilayer cuprate YBa2Cu3O{6+y} is a collinear antiferromagnet. Independent of doping the value of the staggered magnetization at zero temperature is about 0.6…

cond-mat.str-el2011★ 78 cited

Phase Diagram of the J1, J2, J3 Heisenberg Models on the Honeycomb Lattice: A Series Expansion Study

J. Oitmaa, R. R. P. Singh

We study magnetically ordered phases and their phase boundaries in the $J_{1} - J_{2} - J_{3}$ Heisenberg models on the honeycomb lattice using series expansions around Néel and different co…

cond-mat.str-el2011★ 10 cited

Magnetic properties of lightly doped antiferromagnetic YBa $_{2}$ Cu $_{3}$ O $_{y}$

O. P. Sushkov

The present work addresses YBa $_{2}$ Cu $_{3}$ O $_{y}$ at doping below x=6% where the compound is a collinear antiferromagnet. In this region YBa $_{2}$ Cu $_{3}$ O $_{y}$ is a normal cond…

cond-mat.str-el2011★ 37 cited

Width of the longitudinal magnon in the vicinity of the O(3) quantum critical point

Yakov Kulik, Oleg P. Sushkov

We consider a three-dimensional quantum antiferromagnet in the vicinity of a quantum critical point separating the magnetically ordered and the magnetically disordered phases. A sp…

cond-mat.str-el2011★ 5 cited

Effective field theories and spin-wave excitations in helical magnets

A. I. Milstein, O. P. Sushkov

We consider two classes of helical magnets. The first one has magnetic ordering close to antiferromagnet and the second one has magnetic ordering close to ferromagnet. The first ca…

cond-mat.str-el2011★ 9 cited

A Frustrated 3-Dimensional Antiferromagnet: Stacked $J_{1} - J_{2}$ Layers

Onofre Rojas, C. J. Hamer, J. Oitmaa

We study a frustrated 3D antiferromagnet of stacked $J_{1} - J_{2}$ layers. The intermediate 'quantum spin liquid' phase, present in the 2D case, narrows with increasing interlayer cou…

cond-mat.str-el2011★ 29 cited

Slave-boson field fluctuation approach to the extended Falicov-Kimball model: charge, orbital, and excitonic susceptibilities

B. Zenker, D. Ihle, F. X. Bronold +1

Based on the SO(2)-invariant slave-boson scheme, the static charge, orbital, and excitonic susceptibilities in the extended Falicov-Kimball model are calculated. Analyzing the phas…

cond-mat.str-el2011★ 37 cited

Excitonic resonances in the 2D extended Falicov-Kimball model

Van-Nham Phan, Holger Fehske, Klaus W. Becker

Using the projector-based renormalization method we investigate the formation of the excitonic insulator phase in the two-dimensional (2D) spinless Falicov-Kimball model with dispe…