Abstract:
Using Quantum Design SQUID magnetometer and Physical Property Measuring System (PPMS), we studied the magnetic and superconducting properties of high-quality inclination crystallite interfaces (CIs) of bicrystals of Sb and Bi. It was found that the CIs with a higher carrier density than single crystalline samples exhibit a superconducting transition with respectively Tc ≤ 10 K for Sb and Tc ≤ 21 K for Bi interfaces; the Sb CIs also manifest ferromagnetic hysteresis loops against a paramagnetic background, thereby indicating occurrence of superconductivity and weak ferromagnetism.