Results found: 3

Number of results on page

Search results

Sort By:

Limit search:

Observation of Anisotropic Exchange in a Spin Ladder by ESR

100%

Čižmár E., Ozerov M., Krämer K., Rüegg C., Zvyagin S.

Acta Physica Polonica A

2014

vol. 126

issue 1

238-239

We report on high resolution X-band electron spin resonance (ESR) spectroscopy studies of the spin-ladder material (C_{5}H_{12}N)_{2}CuBr_{4}. Our experiments provide a direct evidence for the presence of anisotropy in (C_{5}H_{12}N)_{2}CuBr_{4} in contrast to a fully isotropic spin-ladder model employed for this system previously. Low-temperature angular dependence of ESR transitions is analyzed employing a simple spin-1/2 dimer model with the symmetric anisotropic exchange interaction.

EPR Study of the Two-Dimensional Quantum System Cu(en)(H_2O)_2SO_4

86%

Tarasenko R., Orendáčová A., Čižmár E., Orendáč M., Zvyagin S., Wosnitza J.

Acta Physica Polonica A

2012

vol. 121

issue 5-6

1095-1097

The angular dependence of electron paramagnetic resonance spectra of Cu(en)(H_2O)_2SO_4 single crystals was studied in the X-band frequency range at temperatures 4 and 300 K. Analysis of the linewidth at 300 K revealed nice agreement with the angular variation of the g-factor. This coincidence is the manifestation of the symmetric and antisymmetric exchange coupling, as main broadening mechanisms in Cu(en)(H_2O)_2SO_4 at high temperatures. The radical change of the angular dependence of the linewidth observed at 4 K can be ascribed to dipolar coupling.

Neutron and EPR Study of Cu(tn)Cl_{2} - a~Two-Dimensional Spatially Anisotropic Triangular-Lattice Antiferromagnet

59%

Tarasenko R., Orendáčová A., Čižmár E., Maťaš S., Orendáč M., Zeleňák V., Pavlík V., Siemensmeyer K., Zvyagin S., Wosnitza J., Feher A.

Acta Physica Polonica A

2014

vol. 126

issue 1

232-233

We have studied the temperature dependence of the lattice parameters and the influence of spin anisotropy on the electron paramagnetic spectra of Cu(tn)Cl_2, an S=1/2 quasi-two-dimensional spatially-anisotropic triangular-lattice Heisenberg antiferromagnet. The variation of the resonance fields with temperature reflects the presence of an easy-plane exchange anisotropy with J_{z}/J_{x,y}<1 and g-factor anisotropy, g_{z}/g_{x,y}>1.

Refine search results

3 Acta Physica Polonica A

2 2014

1 2012

3 Zvyagin S.

3 Čižmár E.

2 Orendáč M.

2 Orendáčová A.

2 Tarasenko R.

2 Wosnitza J.

1 Feher A.

1 Krämer K.

1 Maťaš S.

1 Ozerov M.

1 Pavlík V.

1 Rüegg C.

1 Siemensmeyer K.

1 Zeleňák V.

Search results

Observation of Anisotropic Exchange in a Spin Ladder by ESR

EPR Study of the Two-Dimensional Quantum System Cu(en)(H_2O)_2SO_4

Neutron and EPR Study of Cu(tn)Cl_{2} - a~Two-Dimensional Spatially Anisotropic Triangular-Lattice Antiferromagnet