Three axis vector magnet set-up for cryogenic scanning probe microscopy

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4905531· OSTI ID:22392318

Galvis, J. A. ^[1]; Herrera, E.; Buendía, A. ^[1]; Guillamón, I.; Vieira, S.; Suderow, H. ^[1]; Azpeitia, J.; Luccas, R. F.; Munuera, C.; García-Hernandez, M. ^[2]; others, and

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1. Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Instituto de Ciencia de Materiales Nicolás Cabrera, Condensed Matter Physics Center (IFIMAC), Facultad de Ciencias Universidad Autónoma de Madrid, 28049 Madrid (Spain)
2. Unidad Asociada de Bajas Temperaturas y Altos Campos Magnéticos, UAM, CSIC, Cantoblanco, E-28049 Madrid (Spain)

We describe a three axis vector magnet system for cryogenic scanning probe microscopy measurements. We discuss the magnet support system and the power supply, consisting of a compact three way 100 A current source. We obtain tilted magnetic fields in all directions with maximum value of 5T along z-axis and of 1.2T for XY-plane magnetic fields. We describe a scanning tunneling microscopy-spectroscopy (STM-STS) set-up, operating in a dilution refrigerator, which includes a new high voltage ultralow noise piezodrive electronics and discuss the noise level due to vibrations. STM images and STS maps show atomic resolution and the tilted vortex lattice at 150 mK in the superconductor β-Bi{sub 2}Pd. We observe a strongly elongated hexagonal lattice, which corresponds to the projection of the tilted hexagonal vortex lattice on the surface. We also discuss Magnetic Force Microscopy images in a variable temperature insert.

• OSTI ID: 22392318
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ATOMIC FORCE MICROSCOPY
HEXAGONAL LATTICES
IMAGES
MAGNETIC FIELDS
MAGNETS
NOISE
PROBES
SCANNING TUNNELING MICROSCOPY
SUPERCONDUCTORS
VECTORS