Abstract
We have made Cr53 NMR measurements on polycrystalline and single-crystalline film samples to study the local electronic state of a half-metallic ferromagnet CrO2 which has the rutile structure with one crystallographically equivalent Cr site. We observe two kinds of Cr53 NMR spectra in the ferromagnetic state of both the samples. An analysis on the hyperfine field shows the presence of two Cr sites with different orbital occupancies, suggesting that a local orbital order takes place with breaking the local symmetry in the rutile structure. This may be ascribed to the negative charge transfer between chromium and oxygen ions.
| Original language | English |
|---|---|
| Article number | 235129 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 93 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - Jun 15 2016 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
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Local electronic state in the half-metallic ferromagnet CrO2 investigated by site-selective Cr 53 NMR measurements. / Takeda, Hikaru; Shimizu, Yasuhiro; Kobayashi, Yoshiaki; Itoh, Masayuki; Jin-No, Takaaki; Isobe, Masahiko; Ueda, Yutaka; Yoshida, Sho; Muraoka, Yuji; Yokoya, Takayoshi.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 93, No. 23, 235129, 15.06.2016.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Local electronic state in the half-metallic ferromagnet CrO2 investigated by site-selective Cr 53 NMR measurements
AU - Takeda, Hikaru
AU - Shimizu, Yasuhiro
AU - Kobayashi, Yoshiaki
AU - Itoh, Masayuki
AU - Jin-No, Takaaki
AU - Isobe, Masahiko
AU - Ueda, Yutaka
AU - Yoshida, Sho
AU - Muraoka, Yuji
AU - Yokoya, Takayoshi
PY - 2016/6/15
Y1 - 2016/6/15
N2 - We have made Cr53 NMR measurements on polycrystalline and single-crystalline film samples to study the local electronic state of a half-metallic ferromagnet CrO2 which has the rutile structure with one crystallographically equivalent Cr site. We observe two kinds of Cr53 NMR spectra in the ferromagnetic state of both the samples. An analysis on the hyperfine field shows the presence of two Cr sites with different orbital occupancies, suggesting that a local orbital order takes place with breaking the local symmetry in the rutile structure. This may be ascribed to the negative charge transfer between chromium and oxygen ions.
AB - We have made Cr53 NMR measurements on polycrystalline and single-crystalline film samples to study the local electronic state of a half-metallic ferromagnet CrO2 which has the rutile structure with one crystallographically equivalent Cr site. We observe two kinds of Cr53 NMR spectra in the ferromagnetic state of both the samples. An analysis on the hyperfine field shows the presence of two Cr sites with different orbital occupancies, suggesting that a local orbital order takes place with breaking the local symmetry in the rutile structure. This may be ascribed to the negative charge transfer between chromium and oxygen ions.
UR - http://www.scopus.com/inward/record.url?scp=84976543893&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84976543893&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.93.235129
DO - 10.1103/PhysRevB.93.235129
M3 - Article
AN - SCOPUS:84976543893
VL - 93
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 23
M1 - 235129
ER -