@article{halliday,
  title = {Correlated Insulator at the Surface of the Polar Metal
                    <math display="inline">
                      <mrow>
                        <mrow>
                          <msub>
                            <mrow>
                              <mi>Ca</mi>
                            </mrow>
                            <mrow>
                              <mn>3</mn>
                            </mrow>
                          </msub>
                        </mrow>
                        <msub>
                          <mrow>
                            <mtext>Ru</mtext>
                          </mrow>
                          <mrow>
                            <mn>2</mn>
                          </mrow>
                        </msub>
                        <msub>
                          <mrow>
                            <mi>O</mi>
                          </mrow>
                          <mrow>
                            <mn>7</mn>
                          </mrow>
                        </msub>
                      </mrow>
                    </math>},
  author = {Daniel Halliday, Izidor Benedičič, Andela Zivanovic, Masahiro Naritsuka, Brendan Edwards, Tommaso Antonelli, Naoki Kikugawa, Dmitry A. Sokolov, Craig Polley, Andrew P. Mackenzie, Georg Held, Phil D. C. King, Peter Wahl},
  publisher = {American Physical Society (APS)},
  year = {2026},
  keywords = {Ca3Ru2P7, STM/STS}
}