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<p class="MsoNormal">Good Morning,<o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal">Please join us for a Condensed Matter Experiment Seminar presented by Assistant Professor
<a href="http://www.phy.pku.edu.cn/~LabSpin/home.html">Wei Han</a> from ICQM, Peking University, China today at 11:30am in 1080 Smith Seminar, PRB. Learn more about Dr. Han’s seminar topic "Spin and Charge Conversion in 2D Quantum Materials" below. Thank you
and we look forward to seeing you there!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white"><u>Abstract<o:p></o:p></u></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">Spintronics aims to use the spin degrees of freedom for future information technologies. A key challenge for spintronics is the efficient generation of spin currents from charge currents. Recently,
emergent 2D quantum materials are very attractive for spintronics since they provide new mechanisms of spin currents generation [1].
<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">In this talk, I will present the spin and charge conversion in three quantum materials. The first part of my talk will discuss the facet-dependent spin Hall effect and spin orbit torque in single
crystalline antiferromagnetic IrMn3 [2], This result suggests a novel mechanism of the spin current generation arising from the triangular spin configurations in the single crystalline IrMn3. The second part of my talk will discuss the spin to charge conversion
in the spin-momentum locked surface states of the topological Kondo insulator (SmB6), of which pure surface states exist at low temperatures [3]. At the end, I will present on the gate tunable charge to spin conversion at room temperature using the Rashba-split
2DEG at the complex oxides (SrTiO3 and LaAlO3) interface [4]. <o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white"> <o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">References:<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">[1] Wei Han, APL Materials 4, 032401 (2016).<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">[2] Weifeng Zhang*, Wei Han*, See-hun Yang, Yan Sun, Yang Zhang, Binghai Yan, and Stuart S. P. Parkin, Science Advances, 2: e1600759 (2016).
<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">[3] Qi Song, Jian Mi, Dan Zhao, Tang Su, Wei Yuan, Wenyu Xing, Yangyang Chen, Tianyu Wang, Tao Wu, Xian Hui Chen, X. C. Xie, Chi Zhang, Jing Shi, and Wei Han, Nature Communications (In press)
(2016).<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">[4] Qi Song, Hongrui Zhang, Tang Su, Wei Yuan, Yangyang Chen, Wenyu Xing, Jing Shi, Ji Rong Sun, and Wei Han, arXiv:1609.06207.<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white">Sincerely,<br>
Joanna<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#333333"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:13.5pt;background:white"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#333333"><img border="0" width="224" height="45" id="_x0000_i1025" src="http://osu.edu/assets/site/images/logos/osu-emailsig.png" alt="The Ohio State University"><br>
</span><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#BB0000;background:white">Joanna Gardner</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333"><br>
Program Coordinator<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#BB0000;background:white">College of Arts and Sciences</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333"> Physics<br>
2021 Physics Research Building, 191 W Woodruff Avenue, Columbus, OH 43210<br>
614-292-3437 Office<br>
<a href="mailto:gardner.306@osu.edu"><span style="background:white">gardner.306@osu.edu</span></a>
<a href="http://osu.edu"><span style="background:white">osu.edu</span></a> <o:p></o:p></span></p>
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