Spin-selective response tunability in two-dimensional nanomagnet

Recent reports on the two-dimensional (2D) material CrOCl revealed magnetic ordering and spin polarisation with Curie TemperatureT(c)similar to 160 K, values higher than most diluted magnetic semiconductors. Here, we investigate the uniaxial and biaxial strain-dependent electronic and transport properties of CrOCl monolayer using first-principles based calculations. The calculated Young's modulus indicates high mechanical flexibility for the application of high strain. Our study shows that strain can induce phase changes from a bipolar magnetic semiconductor -> half metal -> magnetic metal in the material, leading to interesting spin-resolved conductance with 100% spin filtering. Furthermore, the current-voltage (I-V) response showed conductance fluctuations, characterised by peak to valley ratio and switching efficiency offering high strain assisted tunability. Overall, CrOCl shows a highly anisotropic behaviour with the material displaying 100% spin polarisation in the tensile strain region. The electronic, transport and mechanical properties indicate that CrOCl is a versatile 2D material with multi-phase capabilities having promising applications for future nanospintronic devices.

Nair, A. K.Indian Inst Technol Patna, Dept Phys, Bihta 801106, India. (författare)
Kamalakar, M. VenkataUppsala universitet,Molekyl- och kondenserade materiens fysik(Swepub:uu)venmu994 (författare)
Ray, S. J.Indian Inst Technol Patna, Dept Phys, Bihta 801106, India. (författare)
Indian Inst Technol Patna, Dept Phys, Bihta 801106, India.Molekyl- och kondenserade materiens fysik (creator_code:org_t)

Av författaren/redakt...: Rani, S.; Nair, A. K.; Kamalakar, M. Ve ...; Ray, S. J.

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