Search for dissertations about: "mtj"

Showing result 1 - 5 of 6 swedish dissertations containing the word mtj.

2. 1. Magnetodynamics in Spin Valves and Magnetic Tunnel Junctions with Perpendicular and Tilted Anisotropies

   Author : Quang Tuan Le; Johan Åkerman; Erik Wahlström; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; perpendicular magnetic anisotropy; tilted-polarizer; spintronics; STT; MTJ; pseudospin-valve; STO; ST-FMR; magnonics; magnetic droplet; droplet nucleation; droplet annihilation; vinkelrät magnetisk anisotropi; lutande polarisator; spinntronik; STT; MTJ; pseudospinnventil; STO; ST-FMR; magnonics; magnetisk droppe; nukleering av droppe; anihilering av droppe.; Physics; Fysik;

   Abstract : Spin-torque transfer (STT) effects have brought spintronics ever closer to practical electronic applications, such as MRAM and active broadband microwave spin-torque oscillator (STO), and have emerged as an increasingly attractive field of research in spin dynamics. Utilizing materials with perpendicular magnetic anisotropy (PMA) in such applications offers several great advantages such as low-current, low-field operation combined with high thermal stability. READ MORE

4. 2. Dynamics and Intrinsic Variability of Spintronic Devices

   Author : Corrado Carlo Maria Capriata; B. Gunnar Malm; Per-Erik Hellström; Dan Kuylenstierna; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Spintronics; micromagnetic simulations; SHNO; MTJ; microwave measurements; realistic simulations; low-temperature measurements; fabrication; grains; Spinntronik; mikromagnetiska simuleringar; SHNO; MTJ; mikrovågsmätningar; realistiska simuleringar; lågtemperaturmätningar; nanotillverkning; korn; Informations- och kommunikationsteknik; Information and Communication Technology;

   Abstract : Spintronics is a scientific domain focusing on utilizing electron spin for information processing. This is the element that distinguishes it from electronics, which only utilizes the charge of electrons. READ MORE

5. 3. Spin Torque Oscillator Modeling, CMOS Design and STO-CMOS Integration

   Author : Tingsu Chen; Ana Rusu; Atila Alvandpour; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; STO technology; microwave oscillator; analytical model; macrospin approximation; Verilog-A model; high frequency CMOS circuits; balun-LNA; STO-IC integration; Informations- och kommunikationsteknik; Information and Communication Technology;

   Abstract : Spin torque oscillators (STOs) are microwave oscillators with an attractive blend of features, including a more-than-octave tunability, GHz operating frequencies, nanoscale size, nanosecond switching speed and full compatibility with CMOS technology. Over the past decade, STOs' physical phenomena have been explored to a greater extent, their performance has been further improved, and STOs have already shown great potential for a wide range of applications, from microwave sources and detectors to neuromorphic computing. READ MORE

6. 4. CMOS High Frequency Circuits for Spin Torque Oscillator Technology

   Author : Tingsu Chen; Ana Rusu; Jerzy Dabrowski; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microwave integrated circuit; CMOS; spin torque oscillator; Balun-LNA; wideband amplifier; on-chip bias-tee; multi-standard multi-band radios;

   Abstract : Spin torque oscillator (STO) technology has a unique blend of features, including but not limited to octave tunability, GHz operating frequency, and nanoscaled size, which makes it highly suitable for microwave and radar applications. This thesis studies the fundamentals of STOs, utilizes the state-of-art STO's advantages, and proposes two STO-based microwave systems targeting its microwave applications and measurement setup, respectively. READ MORE

7. 5. Electron Transport in Nanowire Quantum Devices

   Author : Henrik Nilsson; Fasta tillståndets fysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Spin-orbit coupling; the Kondo effect; the Zeeman effect; Quantum dots; Nanowire memories; Nanowire transistors; InSb; InAs; Nanowires; Electron transport; Andreev reflections; Nanowire RF-SET; Noise in nanowires;

   Abstract : This thesis focuses on electron transport in semiconductor InAs/InP and InSb nanowire quantum devices. However, first the temperature dependence of classical charge transport in InSb nanowire field-effect transistors, FETs, is characterized, using InAs nanowire FETs as a reference. READ MORE