Minority-spin t2gstates and the degree of spin polarization in ferromagnetic metallic La2-2xSr1+2xMn2O7 (x = 0.38)

Sun, Z.; Wang, Q.; Douglas, J. F.; Lin, H.; Sahrakorpi, S.; Barbiellini, B.; Markiewicz, R. S.; Bansil, A.; Fedorov, A. V.; Rotenberg, E.; Zheng, H.; Mitchell, J. F.; Dessau, D. S.

doi:10.1038/srep03167

Minority-spin t_{2_g}states and the degree of spin polarization in ferromagnetic metallic La_2-2xSr_1+2xMn₂O₇ (x = 0.38)

Journal Article · Thu Nov 07 00:00:00 EST 2013 · Scientific Reports

DOI:https://doi.org/10.1038/srep03167· OSTI ID:1395129

Sun, Z. ^[1]; Wang, Q. ^[2]; Douglas, J. F. ^[2]; Lin, H. ^[3]; Sahrakorpi, S. ^[3]; Barbiellini, B. ^[3]; Markiewicz, R. S. ^[3]; Bansil, A. ^[3]; Fedorov, A. V. ^[4]; Rotenberg, E. ^[4]; Zheng, H. ^[5]; Mitchell, J. F. ^[5]; Dessau, D. S. ^[2]

Univ. of Colorado, Boulder, CO (United States); Univ. of Science and Technology of China, Anhui (People's Republic of China)
Univ. of Colorado, Boulder, CO (United States)
Northeastern Univ., Boston, MA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)

In this paper, a half-metal is a material with conductive electrons of one spin orientation. This type of substance has been extensively searched for due to the fascinating physics as well as the potential applications for spintronics. Ferromagnetic manganites are considered to be good candidates, though there is no conclusive evidence for this notion. Here we show that the ferromagnet La_2–2xSr_1+2xMn₂O₇ (x = 0.38) possesses minority-spin states, challenging whether any of the manganites may be true half-metals. However, when electron transport properties are taken into account on the basis of the electronic band structure, we found that the La_2–2xSr_1+2xMn₂O₇ (x = 0.38) can essentially behave like a complete half metal.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1395129

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 3; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Direct light–induced spin transfer between different elements in a spintronic Heusler material via femtosecond laser excitation Tengdin, Phoebe; Gentry, Christian; Blonsky, Adam Science Advances, Vol. 6, Issue 3 https://doi.org/10.1126/sciadv.aaz1100	journal	January 2020
A Minimal tight-binding model for ferromagnetic canted bilayer manganites Baublitz, M.; Lane, C.; Lin, Hsin arXiv https://doi.org/10.48550/arxiv.1412.4728	text	January 2014

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