astronomy

Jagadeesh Moodera

Jagadeesh Moodera is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jagadeesh Moodera rather than just read about it. In short: Jagadeesh Subbaiah Moodera is an American physicist of Indian origin and is senior research scientist at MIT's Francis Bitter Magnet Laboratory. In 1995 together with the MIT research team led by P.M.

Key takeaways

Jagadeesh Moodera belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Jagadeesh Moodera to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Jagadeesh Moodera from memory before moving on to harder problems.

Reference excerpt

Jagadeesh Subbaiah Moodera is an American physicist of Indian origin and is senior research scientist at MIT's Francis Bitter Magnet Laboratory. In 1995 together with the MIT research team led by P.M. Tedrow and R. Meservey, they showed a practical way to implement room temperature magnetic tunnel junction (MTJ) using a magnetic stack based on CoFe–Al2O3–Co, demonstrating a tunnel magnetoresistance ratio (TMR) of 11.8%. Low temperature magnetoresistive tunneling had been discovered by Michel Julliere in 1975 but it would be more than a decade before a room temperature system was found. In 1991, Terunobu Miyazaki and others at Tohoku University had demonstrated a MTJ with room temperature TMR of 2.7%. Also in 1995, Miyazaki's team developed a room temperature MTJ with high TMR (18.0%) based on an Fe–Al2O3–Fe stack. Thus, both Moodera and Miyazaki are recognized as the developer of room temperature MTJ. Besides its great fundamental interest, room temperature magnetoresistive tunnelling is the basis for practical devices including MRAM and read heads used in hard disks. Moodera was named a Fellow of the American Physical Society in 2000 "for pioneering and sustained contributions to the understanding of spin-polarized transport in solids". Before investigating ferromagnetic tunneling, Moodera worked on spin-polarized tunneling in superconductor junctions along with Bob Meservey and Paul Tedrow. Moodera, Meservey, Tedrow and Miyazaki shared the 2009 Oliver E. Buckley Condensed Matter Prize "for pioneering work in the field of spin-dependent tunneling and for the application of these phenomena to the field of magnetoelectronics". Born in Bangalore, India, Moodera attended Mysore University (B.S. and M.S.) and the Indian Institute of Technology (Ph.D.). He was briefly at West Virginia University before joining the Francis Bitter Magnet Laboratory staff at MIT in 1981.

References

Moodera, Jagadeesh S.; Nassar, Joaquim; Mathon, George (1999). "Spin-Tunneling in Ferromagnetic Junctions". Annual Review of Materials Science. 29 (1). Annual Reviews: 381–432. Bibcode:1999AnRMS..29..381M. doi:10.1146/annurev.matsci.29.1.381. ISSN 0084-6600.

Worked examples

Example 1 — a first encounter with Jagadeesh Moodera

Start with the simplest possible case. Write down what Jagadeesh Moodera claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jagadeesh Moodera before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jagadeesh Moodera ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jagadeesh Moodera

In research: Jagadeesh Moodera appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Jagadeesh Moodera in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Jagadeesh Moodera is common in secondary-school and first-year university syllabi. It links to neighbouring topics 21st-century American physicists, American academics of Indian descent, IIT Madras alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Jagadeesh Moodera outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Jagadeesh Moodera” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Jagadeesh Moodera in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jagadeesh Moodera means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Jagadeesh Moodera out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jagadeesh Moodera in simple terms?

Why does Jagadeesh Moodera matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jagadeesh Moodera?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jagadeesh Moodera.