OUR PROBES SPECIFICALLY DESIGNED FOR SPIN TRANSPORT MEASUREMENTS IS FEATURED IN MAGNEWS MAGAZINE.

Graphene exhibits weak intrinsic spin-orbit coupling (SOC; hence, it is suitable for use in spintronics applications that require a long spin mean-free path of charge carriers. Due to the weak SOC, the control over the spin is also poor. However, the proximity effect can be leveraged for overcoming this limitation. By depositing graphene on a tungsten disulphide substrate, the strong SOC properties of the substrate are taken up by graphene. Using graphene with both weak and strong SOC, developing a graphene-based spin field effect transistor at room temperature is expected to get closer.

For exploring the non-local magneto-resistance in graphene  deposited on a tungsten disulphide (WS2), a high magnetic field with two orientations with reference to the graphene plane is used. Based on these measurements, the orbital and the spin effects are distinguished. A rotational probe (Figure 1) is used to safeguard the sample from ambient conditions in all the experiments. This probes are designed specifically for  spin transport measurements in TeslatronTMPT Cryofree® system  (Figure2).

Figure 1. Rotating probe with chip holder

Figure 2. TeslatronTMPT Cryofree® system at Barbaros Ozyilmaz lab

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