Spin-Polarized Transport through Single Manganese Phthalocyanine Molecules on a Co Nanoisland

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• 作者：Chuang-Han Hsu ; Yu-Hsun Chu ; Chun-I Lu ; Pin-Jui Hsu ; Szu-Wei Chen ; Wang-Jung Hsueh ; Chao-Cheng Kaun ; Minn-Tsong Lin
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：February 12, 2015
• 年：2015
• 卷：119
• 期：6
• 页码：3374-3378
• 全文大小：364K
• ISSN：1932-7455

文摘

We investigate spin-polarized (SP) electronic transport properties and hybrid states of a single manganese phthalocyanine (MnPc) molecule adsorbed on a Co nanoisland, with the SP scanning tunneling microscopy measurements and the first-principles calculations. Our analyses show that the MnPc molecule can pin the Co surface state to the Fermi level, forming hybrid stationary spin resonance states which, with an antiparallel-magnetization tip, give a resonant SP conductance peak. Our calculations further reveal that as the tip approaches the molecule, electronic and magnetic couplings in the junction are tuned as the Zener indirect exchange coupling becomes prominent, which switches the conduction carriers from s to d electrons and leads to the tailored magnetic moments and magnetoresistance.