Search results

1

Transmission and Reflectionof Spin-Polarized Electrons Propagating through a Model Domain Wall

100%

Sýkora R., Turek I.

Acta Physica Polonica A

|

2008

|

vol. 113

|

issue 1

15-18

EN

An analytically tractable simple model of a magnetic domain wall in a ferromagnetic metal is considered and, assuming the ballistic regime of electronic transport, transmission and reflection coefficients of such a wall are calculated within the stationary scattering theory. It is rederived that for realistic values of electron energies and domain wall widths the transmission coefficient is very close to one and thus an ideal domain wall itself (i.e. not taking into account other aspects such as disorder) does not essentially represent a hindrance to the transport.

2

Optical Properties of a Monoclinic Insulator Cu(H₂O)₂(en)SO₄

81%

Sýkora R., Postava K., Legut D., Tarasenko R.

Acta Physica Polonica A

|

2015

|

vol. 127

|

issue 2

469-471

EN

We compare theoretically predicted, by means of ab-initio calculations, dielectric tensor and related experimental values obtained from Mueller-ellipsometry measurements of an insulating monoclinic (optically biaxial) crystal of Cu(H₂O)₂(en)SO₄, en=C₂H₈N₂. We concentrate on the static limit, ω→ 0.

3

Exchange Interactions in a Low-Dimensional Magnetic System Cu(H_{2}O)_{2}(en)SO_{4}

81%

Sýkora R., Legut D., Wdowik U.

|

EN

We report a theoretical ab-initio investigation of the exchange interaction between Cu atoms in Cu(H_{2}O)_{2}(en)SO_{4}, en=C_{2}H_{8}N_{2}(ethylenediamine), an insulating magnetic material. Unlike previous experimental studies which describe the system as a quasi-two-dimensional antiferromagnet, our results, based on the mapping of the system onto an effective Heisenberg model, suggest a quasi-one-dimensional character of magnetism, with the exchange coupling between the Cu atoms being propagated along a zigzag line, lying in the crystal's bc plane and connecting the Cu atoms through the N atoms. Furthermore, we report the calculated positions of the H atoms that have not been provided in experimental papers.

Refine search results

3 Acta Physica Polonica A

1 2015

1 2014

1 2008

3 Sýkora R.

2 Legut D.

1 Postava K.

1 Tarasenko R.

1 Turek I.

1 Wdowik U.

Transmission and Reflectionof Spin-Polarized Electrons Propagating through a Model Domain Wall

Optical Properties of a Monoclinic Insulator Cu(H₂O)₂(en)SO₄

Exchange Interactions in a Low-Dimensional Magnetic System Cu(H_{2}O)_{2}(en)SO_{4}