Electronic Structure of Strongly Correlated Systems

<table>The <svg height="14.75" id="M999" style="vertical-align:-3.25793pt" version="1.1" viewbox="0 0 60.599998 14.75" width="60.599998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.75)">
<g transform="translate(72,-60.2)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">F</tspan>
<tspan style="font-size: 12.50px; " x="6.9016562" y="0">e</tspan>
</text>
<text transform="matrix(1,0,0,-1,-59.5,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">2</tspan>
</text>
<text transform="matrix(1,0,0,-1,-54.62,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">O</tspan>
<tspan style="font-size: 12.50px; " x="9.0271664" y="0">B</tspan>
<tspan style="font-size: 12.50px; " x="17.154116" y="0">O</tspan>
</text>
<text transform="matrix(1,0,0,-1,-28.44,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
</text>
</g>
</g>
</svg> structure projected on (100) plane (<svg height="10.7375" id="M1000" style="vertical-align:-0.13794pt" version="1.1" viewbox="0 0 7.4749999 10.7375" width="7.4749999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.7375)">
<g transform="translate(72,-63.41)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑏</tspan>
</text>
</g>
</g>
</svg> vertical, <svg height="7.1875" id="M1001" style="vertical-align:-0.13794pt" version="1.1" viewbox="0 0 7.3874998 7.1875" width="7.3874998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,7.1875)">
<g transform="translate(72,-66.25)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑐</tspan>
</text>
</g>
</g>
</svg> horizontal). Two structurally distinct <svg height="14.75" id="M1002" style="vertical-align:-3.25793pt" version="1.1" viewbox="0 0 51.287498 14.75" width="51.287498" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.75)">
<g transform="translate(72,-60.2)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">F</tspan>
<tspan style="font-size: 12.50px; " x="6.9016562" y="0">e</tspan>
<tspan style="font-size: 12.50px; " x="12.452988" y="0">(</tspan>
<tspan style="font-size: 12.50px; " x="16.616488" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="22.867987" y="0">)</tspan>
<tspan style="font-size: 12.50px; " x="27.031487" y="0">O</tspan>
</text>
<text transform="matrix(1,0,0,-1,-35.89,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">6</tspan>
</text>
</g>
</g>
</svg> and <svg height="14.75" id="M1003" style="vertical-align:-3.25793pt" version="1.1" viewbox="0 0 51.287498 14.75" width="51.287498" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.75)">
<g transform="translate(72,-60.2)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">F</tspan>
<tspan style="font-size: 12.50px; " x="6.9016562" y="0">e</tspan>
<tspan style="font-size: 12.50px; " x="12.452988" y="0">(</tspan>
<tspan style="font-size: 12.50px; " x="16.616488" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="22.867987" y="0">)</tspan>
<tspan style="font-size: 12.50px; " x="27.031487" y="0">O</tspan>
</text>
<text transform="matrix(1,0,0,-1,-35.89,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">6</tspan>
</text>
</g>
</g>
</svg> octahedra shown by light and dark sharing, respectively. Plus and minus signs indicate the relative orientation of the moments within each Fe(1) and Fe(2) chains in the magnetically ordered phase.</table>

Advances in Condensed Matter Physics

Electronic Structure of Strongly Correlated Systems

Figure 13