Magnetoresistance of rolled-up Fe3Si nanomembranes
Magnetoresistance of rolled-up Fe3Si nanomembranes
复制标题
卷绕的 Fe3Si 纳米膜的磁阻
DOI:
10.1088/0957-4484/23/25/255701
复制
发表时间:
2012
期刊:
影响因子:
3.5
通讯作者:
O. G. Schmidt
中科院分区:
文献类型:
--
作者:
J. Schumann;K. G. Lisunov;W. Escoffier;B. Raquet;J. M. Broto;E. Arushanov;I. Mönch;D. Makarov;C. Deneke;O. G. Schmidt
Magnetotransport of individual rolled-up Fe 3 Si nanomembranes is investigated in a broad temperature range from 4.2 K up to 300 K in pulsed magnetic fields up to 55 T. The observed magnetoresistance (MR) has the following pronounced features:(i) MR is negative in the investigated intervals of temperature and magnetic field;(ii) its magnitude increases linearly with the magnetic field in a low-field region and reveals a gradual trend to saturation when the magnetic field increases;(iii) the MR effect becomes more pronounced with increasing temperature. These dependences of MR on the magnetic field and temperature are in line with predictions of the spin-disorder model of the spin-flip s–d interaction assisted with creation or annihilation of magnons, which is expected above a certain critical temperature. Comparison of the MR features in rolled-up and planar samples reveals a substantial increase of the critical temperature in the rolled-up tube, which is attributed to a new geometry and internal strain arising in the rolled-up nanomembranes, influencing the electronic and magnetic properties of the material.
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
I. Mönch;J. Schumann;M. Stockmann;K. Arndt;O. Schmidt
通讯作者:
O. Schmidt
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
H. Vinzelberg;J. Schumann;D. Elefant;E. Arushanov;O. Schmidt
通讯作者:
O. Schmidt