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Ethnically,
I come from a mixed family. My father was the son of Jewish immigrants
who left Russia shortly after the turn of the century, and my mother was
the daughter of a Lutheran minister whose parents were from what is now
Slovakia. Mostly, however, I grew up in a medical family. My father's
father and all his children either became physicians or married them.
My parents had met in New York where my father was a medical intern and
my mother was a nurse. At the end of World War II, my parents settled
in Aberdeen, a small logging town on the west coast of Washington State,
where medical doctors were in short supply. Surrounded by natural beauty,
it was a perfect place to raise a family, and I was the second of five
children.
To this day I grow pale at the sight of blood, and never for a moment
considered a career in medicine. Despite this, my father, who was usually
engrossed in his medical career, inspired in me passions for both photography
and gardening, which were his hobbies when time permitted, as they are
mine. Natural science interested me intensely from a very early age. When
I was six I began tearing my toys apart to play with the electric motors.
From then on, my free hours were occupied by a myriad of mechanical, chemical
and electrical projects, culminating in the construction of a 100 keV
X-ray machine during my senior year in high school.
My projects often involved an element of danger, but my parents never
seemed too concerned, nor did they inhibit me. Once a muzzle loading rifle
I had built went off in the house, putting a hole through two walls. On
another occasion a make-shift acetylene 'miners' lamp blew up on my chemistry
bench in the basement, embedding shards of glass in the side of my face,
narrowly missing my right eye. With blood running down my face, I came
up the stairs cupping my hands to keep the blood off the carpet. My mother
was by then at the top of the stairs. Knowing my propensity for practical
jokes, she exclaimed loudly "If you're kidding I'll kill you! " As usual,
my father lectured me about safety as he sewed the larger wounds closed,
and there was always an unspoken understanding that that particular phase
of my experimentation was over.
In high school I was a good student, but only really excelled in physics
and chemistry classes. While I liked physics much more than chemistry,
the chemistry teacher, William Hock, had spent quite a bit of time telling
us what physical research was all about (as opposed to my experimentation),
and that effort made a deep impression on my young mind. My interest in
experimentation helped me to develop excellent technical skills, but I
did not feel motivated to do independent reading in those areas of physics
or chemistry associated with my projects. I was intellectually rather
lazy, and in high school I would always take one free class period so
that I could get my homework out of the way, freeing the evenings for
my many projects.
My parents were generous,
and the home for me was filled with scientific toys and gadgets. In addition,
their children were allowed to attend any university to which they could
get admitted. I chose Caltech over Stanford to avoid a continuing comparison
of my academic record with that of my older brother, then a Stanford undergraduate.
It was a good time
to be at Caltech, as Feynman was teaching his famous undergraduate course.
This two-year sequence was an extremely important part of my education.
Although I cannot say that I understood it all, I think it contributed
most to the development of my physical intuition. The Feynman problem
sets were very challenging, but I had the good fortune to know Ernest
Ma, who was an undergraduate one year ahead of me. Ernest would never
tell me how to solve problems, but would give obscure hints when I got
stuck, at least they seemed obscure to me at the time.
It was a shock to suddenly have to work so hard in my studies. I had the
most trouble in math, and only through considerable trauma did I gradually
improve my performance from a grade of C+ to A+ over a three-year period.
Years later, when Caltech was offering me a faculty position, I confided
that I did not have a very illustrious career as an undergraduate. To
this remark the division chair replied "That's OK Doug, we are not hiring
you to be an undergraduate."
The pressure at Caltech
was extreme, and I am not sure I would have survived had I not joined
a group of undergraduates working with
Gerry Neugebauer on his famous
infra-red star survey during my junior year. This experience made me recognize
how satisfying research could be, and how different it was from doing
endless problem sets. In my senior year, in order to get out of a third
term of senior physics lab, I also began working in David Goodstein's
low temperature lab (David was in Italy). Two professors, Don McCullum
from U.C. Riverside and Walter Ogier from Pamona College, were spending
their sabbatical leaves there trying to reach a temperature of 0.5K by
pumping on a helium bath in which the superfluid film had been carefully
controlled. They filled my mind with the wonders of the low temperature
world, and I decided 1 would go into solid state physics.
I chose to attend Cornell for graduate school largely because it was so
far away from the Pasadena smog. In the end, it was a good choice, and
a good time to be at Cornell. Soon after my arrival I met two people who
were to become very important in my life. While still looking for housing,
I met Phyllis Liu, a pretty young woman from Taiwan, who had also just
arrived in Ithaca. We dated a bit, but then she found herself too busy
with her studies for such diversions. We met again three years later,
and were married in August, 1970, two weeks after she obtained her Ph.D.
The other person was David Lee, the head of the low temperature laboratory
at Cornell and the professor under whom I was to work as a teaching assistant
my first year. Dave seemed to think that I was bright, and encouraged
me to join the low temperature group.
Low temperature physics seemed even more exciting at Cornell than it had
been at Caltech. New technologies and interesting physics made the field
easy to choose, and I found myself thoroughly enjoying every minute of
my work. In the spring of my fourth year Dave Lee asked me to talk to
the Bell Labs recruiter, who came to campus in the fall and spring of
each year. I was not ready to graduate, but we talked a bit, especially
about making tiny electrical plugs to be used throughout the Bell Telephone
system. It seemed interesting to me, although not really physics. In the
fall, Dave suggested I start interviewing in earnest. I first talked with
General Electric, who seemed to have no jobs whatsoever. I then talked
to Bell Labs again, but this time to a new recruiter, Venky Narayanamurti,
who had recently received his Ph.D. in physics at Cornell. Venky was enthusiastic
about what I was doing, and felt that I might be able to get a postdoc
doing Raman spectroscopy. I didn't confess that I knew nothing about the
subject.
We discovered our mysterious phase transitions in my Pomeranchuk cell
in November 1971, and almost by magic, Venky called me up in early December
with good news. The hiring freeze which had been in place for almost two
years at Bell had been lifted. How soon could I be ready to come down
for a job interview? I told Venky that we had stumbled on to something
that was pretty exciting, and we fixed the date: January 6, 1972.
At Bell Labs, a job interview began with a thesis defence, and it could
at times turn nasty. I was lucky that no one questioned my association
of the A and B features with the solid. In particular, Dick Werthamer
was in the audience, and he had done early work on the p-wave BCS state
soon to be associated with the B phase. I think my enthusiasm carried
the day, and ultimately Bell Labs offered me not a postdoc position in
Raman spectroscopy, but a permanent position which would allow me to continue
my studies on 3He.
Phyllis and I moved to New Jersey in September, 1972; Phyllis to a postdoc
position at Princeton University, and I to Bell Laboratories at Murray
Hill. This was the golden era at Bell Labs. The importance of the transistor,
invented in the research area there, made management extremely supportive
of basic research. The only requirement was that work done should be 'good
physics' in that it changed the way we thought about nature in some important
way. I joined the Department of Solid State and Low Temperature Research
under the direction of C. C. Grimes, and began purchasing the equipment
I would need to continue what I by then knew were studies of superfluidity
in 3He. Some instrumentation was even purchased before I arrived in New
Jersey. Yet I knew it would take at least a year to set up my laboratory,
and I feared that most of the important pioneering work would be done
before my own lab became operational.
I was surprised
to find that by the time my laboratory did become operational, few of
the studies that interested me had been done. Indeed, there seemed to
be some question as to whether or not these new phases were all p-wave
BCS states. In addition, theorists Phil Anderson and Bill Brinkman at
Bell Labs had become interested in the theory of superfluid 3He. This
set the stage for what was to be an extremely productive period in my
career. Over a five year period, beginning in 1973, we measured many of
the important characteristics of the superfluid phases which helped identify
the microscopic states involved. We found the superfluid phases to be
almost unbelievably complex, and at the same time extremely well described
by the BCS theory and extensions to that theory developed during that
period.
In about 1977 I began to feel pressure from Bell Laboratories management
to go on to study other physical systems. I decided to study solid 3He,
my original thesis topic, and at the same time Gerry Dolan and I began
a modest program to test some of the ideas that David Thouless had discussed
on electron localization in disordered one-dimensional systems. This latter
study had to fit within the extremely slow time scale of the solid 3He
work. By late 1979, both of these efforts had succeeded beyond my wildest
expectations. We discovered antiferromagnet resonance in nuclear spin
ordered solid 3He samples which we grew from the superfluid phase directly
into the spin-ordered solid phase. At the same time, the low temperature
group at the University of Florida also discovered these resonances, but
because we cooled our samples by adiabatic nuclear demagnetization of
copper rather than Pomeranchuk cooling, only we were able to form and
study single crystals, and could thus identify the allowed magnetic domain
orientations. In the end, Mike Cross, Daniel Fisher and I were able to
determine the symmetry of the magnetic sub-lattice structure, and correctly
guessed the precise ordered structure, later confirmed by polarized neutron
scattering. The frequency shifts resulting from this antiferromagnetic
resonance have made solid 3He an extremely useful model magnetic system,
and to understand them theoretically, we had borrowed some of the same
formalism which Leggett used to understand the frequency shifts in superfluid
3He.
At almost the same time that Cross, Fisher and I made our breakthrough
in our solid 3He studies, Dolan and I discovered the log(T) temperature
dependence to the electrical resistivity in disordered 2D conductors which
Phil Anderson and his 'gang of four' had just predicted would exist, as
a result of what they termed 'weak localization'. I did not continue the
work on weak localization, as I only had one cryostat, and to do so would
have meant that I could not continue my studies on nuclear spin ordering
in solid 3He, since the two sets of experiments would have vastly different
time scales. Somewhat ironically, I got a second cryostat two years later.
In 1987, after fifteen
years, I left Bell Laboratories to accept a position at Stanford University.
I had received informal offers of university positions periodically while
at Bell Labs, but always found Bell to be the ideal place to do research.
The combination of in-house support for basic science and first rate collaborators
made Bell Labs unbeatable as an environment for doing research. However,
my wife recognized in me a teacher waiting to be born. In addition, she
was not happy with her job in New Jersey, and we agreed that she would
apply for positions elsewhere. When she received offers from two biotech
companies in California, Amgen and Genentech, I suggested that she accept
the Genentech offer and that I would start talking to Stanford and U.C.
Berkeley. Stanford, which has a small physics department, had just begun
a search for a low temperature physicist. Ultimately, I received offers
from both institutions, and chose Stanford because we liked the atmosphere
better, and it was a better commute for Phyllis.
At Stanford my students and I have continued work on superfluid and solid
3He, studying how the B superfluid phase is nucleated from the higher
temperature A phase and diverse properties of magnetically ordered solid
3He in two and three dimensions. In addition, we have developed a program
to study the low temperature properties of amorphous solids. Our work
has shown that interactions between active defects in these systems create
a hole in the density of states vs. local field, just as is seen in spin-glasses.
In amorphous materials, it may be possible to measure the size of coupled
clusters of such defects, something which has been difficult in spin-glasses.
I have thoroughly
enjoyed all aspects of university life, except for having to apply for
research support. In particular, I have been fortunate to have had excellent
graduate students, and to be able to teach bright undergraduates. Of course,
with undergraduates one always has a few students who do not appreciate
the professor's efforts. In 1988, after teaching my first large lecture
course, one student wrote in his course evaluation: "Osheroff is a typical
example of some lunkhead from industry who Stanford University hires for
his expertise in some random field." Despite this minority opinion, in
1991 Stanford presented me their Gores Award for excellence in teaching.
From 1993-1996 I served as Physics Department chair, and stepped down
in September 1996, hoping to spend more time with my graduate students.
The day I learned I was to receive the Nobel Prize, after just two and
a half hours sleep the night before, I taught my class on the physics
of photography, although the lecture was not on photographic lenses, but
the discovery of superfluidity in 3He.
From Les Prix Nobel
1996.
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