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• W3208445282 abstract "We consider trilayer ${mathrm{F}}_{1}{mathrm{F}}_{2}{mathrm{F}}_{3}$ Josephson junctions that are finite in two dimensions and have arbitrary magnetizations in each ferromagnet ${mathrm{F}}_{i}phantom{rule{0.28em}{0ex}}(i=1,2,3)$. The trilayers are sandwiched between two $s$-wave superconductors with a macroscopic phase difference $mathrm{ensuremath{Delta}}ensuremath{varphi}$. Our results reveal that when the magnetizations have three orthogonal components, a supercurrent can flow at $mathrm{ensuremath{Delta}}ensuremath{varphi}=0$. With our generalized theoretical and numerical techniques, we study the planar spatial profiles and $mathrm{ensuremath{Delta}}ensuremath{varphi}$ dependencies of the charge supercurrents, spin supercurrents, spin torques, and density of states. Remarkably, upon increasing the magnetization strength in the central ferromagnet layer up to the half-metallic limit, the self-biased current and induced second harmonic component become dramatically enhanced while the critical supercurrent reaches its maximum value. Additionally, for a broad range of exchange-field strengths and orientations, the ground state of the system can be tuned to an arbitrary phase difference ${ensuremath{varphi}}_{0}$. For intermediate exchange-field strengths in the middle layer ${mathrm{F}}_{2}$, a ${ensuremath{varphi}}_{0}$ state can arise that creates a superconducting diode effect, whereby $mathrm{ensuremath{Delta}}ensuremath{varphi}$ can be tuned to create a one-way dissipationless current flow. The spin currents and effective magnetic moments reveal a long-ranged spin torque in the half-metallic phase. Moreover, the density of states unveils the emergence of zero-energy peaks for the mutually orthogonal magnetization configurations. Our results suggest that this simple trilayer Josephson junction can be an excellent candidate for producing experimentally accessible signatures for long-ranged self-biased supercurrents and supercurrent diode effects." @default.
• W3208445282 created "2021-11-08" @default.
• W3208445282 creator A5009096084 @default.
• W3208445282 creator A5049686642 @default.
• W3208445282 creator A5065613490 @default.
• W3208445282 creator A5087957266 @default.
• W3208445282 date "2022-03-21" @default.
• W3208445282 modified "2023-10-16" @default.
• W3208445282 title "Supercurrent diode effect, spin torques, and robust zero-energy peak in planar half-metallic trilayers" @default.
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• W3208445282 doi "https://doi.org/10.1103/physrevb.105.104508" @default.
• W3208445282 hasPublicationYear "2022" @default.
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