Biswas, Amlan ; Arulraj, Anthony ; Raychaudhuri, A. K. ; Rao, C. N. R. (2000) Collapse of the charge ordering gap of Nd0.5Sr0.5MnO3 in an applied magnetic field Journal of Physics: Condensed Matter, 12 (6). L101-L107. ISSN 0953-8984
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Official URL: http://iopscience.iop.org/0953-8984/12/6/106?fromS...
Related URL: http://dx.doi.org/10.1088/0953-8984/12/6/106
Abstract
We report results of tunneling studies on the charge ordering compound Nd0.5Sr0.5MnO3 in a magnetic field up to 6T and for temperature down to 25 K.We show that a gap (2ΔCO≈0.5 eV opens up in the density of state (DOS) at the Fermi level (EF) on charge ordering (TCO=150 K) which collapses in an applied magnetic field when the charge ordered state melts. There is a clear correspondence between the behaviour of the resistivity and the gap formation and its collapse in an applied magnetic field. We conclude that a gap in the DOS at EF is necessary for the stability of the charge ordered state.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics. |
| ID Code: | 44733 |
| Deposited On: | 23 Jun 2011 05:37 |
| Last Modified: | 05 Jul 2012 04:02 |
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